Error in Two-Way FSI simulation

Error in Two-Way FSI simulation – system coupling

- March 20, 2023 at 5:37 pm
  
  Francesc Riera
  Subscriber
  
  Hi, I'm following online tutorials to simulate a Two-Way FSI but when I get to system coupuling I allways get the same errors. There is a photo of the error messages and the solution infformation of the system coupling.
  
  This file may contain appended logs from a sequence of runs, with the most
  recent output reported at the end of the file.
  
  ===============================================================================
  Transcript output started: 2023-03-20 17:59:24
  
  ===============================================================================
  +=============================================================================+
  | |
  | Summary of Coupling Setup |
  | |
  +=============================================================================+
  ===============================================================================
  
  +=============================================================================+
  | Coupling Participants (2) |
  +=============================================================================+
  | |
  | Participant: Fluid Flow (Fluent) |
  | Type : FLUENT |
  | UpdateControls: |
  | Option : ProgramControlled |
  | Region: fluid-solid_interface |
  | Topology : Surface |
  | Input Variables : displacement |
  | Output Variables : force |
  | Variable: displacement |
  | Quantity Type : Incremental Displacement |
  | Location : Node |
  | Tensor Type : Vector |
  | Is Extensive : False |
  | Data Type : Real |
  | Variable: force |
  | Quantity Type : Force |
  | Location : Element |
  | Tensor Type : Vector |
  | Is Extensive : True |
  | Data Type : Real |
  | |
  +-----------------------------------------------------------------------------+
  | |
  | Participant: Static Structural |
  | Type : MAPDL |
  | UpdateControls: |
  | Option : ProgramControlled |
  | Region: Fluid Solid Interface |
  | Topology : Surface |
  | Input Variables : Force, Force_Density |
  | Output Variables : Incremental_Displacement |
  | Variable: Force |
  | Quantity Type : Force |
  | Location : Node |
  | Tensor Type : Vector |
  | Is Extensive : True |
  | Data Type : Real |
  | Variable: Incremental_Displacement |
  | Quantity Type : Incremental Displacement |
  | Location : Node |
  | Tensor Type : Vector |
  | Is Extensive : False |
  | Data Type : Real |
  | |
  +=============================================================================+
  | Analysis Control |
  +=============================================================================+
  | |
  | Analysis Type : Steady |
  | Global Stabilization : None |
  | OptimizeIfOneWay : False |
  | AllowSimultaneousUpdate : False |
  | PartitioningAlgorithm : SharedAllocateMachines |
  | |
  +=============================================================================+
  | Coupling Interfaces (1) |
  +=============================================================================+
  | |
  | Interface: interface-1 |
  | Side: One |
  | Coupling Participant : Static Structural |
  | Region List : Fluid Solid Interface |
  | Reference Frame : GlobalReferenceFrame |
  | Side: Two |
  | Coupling Participant : Fluid Flow (Fluent) |
  | Region List : fluid-solid_interface |
  | Reference Frame : GlobalReferenceFrame |
  | Data Transfer: Data Transfer |
  | Suppress : False |
  | Target Side : Two |
  | Source Variable : Incremental_Displacement |
  | Target Variable : displacement |
  | Unmapped Value Option : Nearest Value |
  | Mapping Type : Surface Profile Preserving |
  | Convergence Target : 1.00E-02 |
  | Ramping Option : None |
  | Relaxation Factor : 1.00E+00 |
  | Data Transfer: Data Transfer 2 |
  | Suppress : False |
  | Target Side : One |
  | Source Variable : force |
  | Target Variable : Force |
  | Mapping Type : Surface Conservative |
  | Convergence Target : 1.00E-02 |
  | Ramping Option : None |
  | Relaxation Factor : 1.00E+00 |
  | Mapping Control: |
  | Absolute Gap Tolerance : 0.0 [m] |
  | Face Alignment : ProgramControlled |
  | Poor Intersection Threshold : 5.00e-01 |
  | Relative Gap Tolerance : 1.00e+00 |
  | Stop If Poor Intersection : True |
  | |
  +=============================================================================+
  | Solution Control |
  +=============================================================================+
  | |
  | Duration Option : NumberOfSteps |
  | Maximum Iterations : 2 |
  | Minimum Iterations : 1 |
  | Number Of Steps : 80 |
  | |
  +=============================================================================+
  | Output Control |
  +=============================================================================+
  | |
  | Output Control Option : LastStep |
  | Results |
  | IncludeInstances : ProgramControlled |
  | Option : Off |
  | Write Initial Snapshot : True |
  | |
  +=============================================================================+
  
  +-----------------------------------------------------------------------------+
  | Warnings were found during data model validation. |
  +-----------------------------------------------------------------------------+
  | Warning: Participant Static Structural (CouplingParticipant:Solution) has |
  | the ExecutionControl 'Option' set to 'ExternallyManaged'. System |
  | Coupling will not control the startup/shutdown behavior of this |
  | participant. |
  | Warning: Participant Fluid Flow (Fluent) (CouplingParticipant:Solution 1) |
  | has the ExecutionControl 'Option' set to 'ExternallyManaged'. System |
  | Coupling will not control the startup/shutdown behavior of this |
  | participant. |
  +-----------------------------------------------------------------------------+
  
  +-----------------------------------------------------------------------------+
  | The variable locations of force and heatflow variables for all Fluent |
  | participants are set to 'Element'. Make sure that this is consistent with |
  | the setup within Fluent. When importing the SCI file (this includes running |
  | inside Workbench), you can control the locations of these variables by |
  | using the 'SYC_FLUENT_CONSNODAL' environment variable. For more |
  | information, refer to System Coupling User's Guide. |
  +-----------------------------------------------------------------------------+
  Awaiting connections from coupling participants...
  +-----------------------------------------------------------------------------+
  | "System coupling solution stopped before all participants connected. A |
  | solver failure occurred during the run in the Fluid Flow (Fluent) system" |
  +-----------------------------------------------------------------------------+
  
  Transcript output stopped: 2023-03-20 17:59:44
  ===============================================================================
  
  ===============================================================================
  Transcript output started: 2023-03-20 18:02:41
  
  ===============================================================================
  +=============================================================================+
  | |
  | Summary of Coupling Setup |
  | |
  +=============================================================================+
  ===============================================================================
  
  +=============================================================================+
  | Coupling Participants (2) |
  +=============================================================================+
  | |
  | Participant: Fluid Flow (Fluent) |
  | Type : FLUENT |
  | UpdateControls: |
  | Option : ProgramControlled |
  | Region: fluid-solid_interface |
  | Topology : Surface |
  | Input Variables : displacement |
  | Output Variables : force |
  | Variable: displacement |
  | Quantity Type : Incremental Displacement |
  | Location : Node |
  | Tensor Type : Vector |
  | Is Extensive : False |
  | Data Type : Real |
  | Variable: force |
  | Quantity Type : Force |
  | Location : Element |
  | Tensor Type : Vector |
  | Is Extensive : True |
  | Data Type : Real |
  | |
  +-----------------------------------------------------------------------------+
  | |
  | Participant: Static Structural |
  | Type : MAPDL |
  | UpdateControls: |
  | Option : ProgramControlled |
  | Region: Fluid Solid Interface |
  | Topology : Surface |
  | Input Variables : Force, Force_Density |
  | Output Variables : Incremental_Displacement |
  | Variable: Force |
  | Quantity Type : Force |
  | Location : Node |
  | Tensor Type : Vector |
  | Is Extensive : True |
  | Data Type : Real |
  | Variable: Incremental_Displacement |
  | Quantity Type : Incremental Displacement |
  | Location : Node |
  | Tensor Type : Vector |
  | Is Extensive : False |
  | Data Type : Real |
  | |
  +=============================================================================+
  | Analysis Control |
  +=============================================================================+
  | |
  | Analysis Type : Steady |
  | Global Stabilization : None |
  | OptimizeIfOneWay : False |
  | AllowSimultaneousUpdate : False |
  | PartitioningAlgorithm : SharedAllocateMachines |
  | |
  +=============================================================================+
  | Coupling Interfaces (1) |
  +=============================================================================+
  | |
  | Interface: interface-1 |
  | Side: One |
  | Coupling Participant : Static Structural |
  | Region List : Fluid Solid Interface |
  | Reference Frame : GlobalReferenceFrame |
  | Side: Two |
  | Coupling Participant : Fluid Flow (Fluent) |
  | Region List : fluid-solid_interface |
  | Reference Frame : GlobalReferenceFrame |
  | Data Transfer: Data Transfer |
  | Suppress : False |
  | Target Side : Two |
  | Source Variable : Incremental_Displacement |
  | Target Variable : displacement |
  | Unmapped Value Option : Nearest Value |
  | Mapping Type : Surface Profile Preserving |
  | Convergence Target : 1.00E-02 |
  | Ramping Option : None |
  | Relaxation Factor : 1.00E+00 |
  | Data Transfer: Data Transfer 2 |
  | Suppress : False |
  | Target Side : One |
  | Source Variable : force |
  | Target Variable : Force |
  | Mapping Type : Surface Conservative |
  | Convergence Target : 1.00E-02 |
  | Ramping Option : None |
  | Relaxation Factor : 1.00E+00 |
  | Mapping Control: |
  | Absolute Gap Tolerance : 0.0 [m] |
  | Face Alignment : ProgramControlled |
  | Poor Intersection Threshold : 5.00e-01 |
  | Relative Gap Tolerance : 1.00e+00 |
  | Stop If Poor Intersection : True |
  | |
  +=============================================================================+
  | Solution Control |
  +=============================================================================+
  | |
  | Duration Option : NumberOfSteps |
  | Maximum Iterations : 2 |
  | Minimum Iterations : 1 |
  | Number Of Steps : 80 |
  | |
  +=============================================================================+
  | Output Control |
  +=============================================================================+
  | |
  | Output Control Option : LastStep |
  | Results |
  | IncludeInstances : ProgramControlled |
  | Option : Off |
  | Write Initial Snapshot : True |
  | |
  +=============================================================================+
  
  +-----------------------------------------------------------------------------+
  | Warnings were found during data model validation. |
  +-----------------------------------------------------------------------------+
  | Warning: Participant Static Structural (CouplingParticipant:Solution) has |
  | the ExecutionControl 'Option' set to 'ExternallyManaged'. System |
  | Coupling will not control the startup/shutdown behavior of this |
  | participant. |
  | Warning: Participant Fluid Flow (Fluent) (CouplingParticipant:Solution 1) |
  | has the ExecutionControl 'Option' set to 'ExternallyManaged'. System |
  | Coupling will not control the startup/shutdown behavior of this |
  | participant. |
  +-----------------------------------------------------------------------------+
  
  +-----------------------------------------------------------------------------+
  | The variable locations of force and heatflow variables for all Fluent |
  | participants are set to 'Element'. Make sure that this is consistent with |
  | the setup within Fluent. When importing the SCI file (this includes running |
  | inside Workbench), you can control the locations of these variables by |
  | using the 'SYC_FLUENT_CONSNODAL' environment variable. For more |
  | information, refer to System Coupling User's Guide. |
  +-----------------------------------------------------------------------------+
  Awaiting connections from coupling participants...
  +-----------------------------------------------------------------------------+
  | "System coupling solution stopped before all participants connected. A |
  | solver failure occurred during the run in the Fluid Flow (Fluent) system" |
  +-----------------------------------------------------------------------------+
  
  Transcript output stopped: 2023-03-20 18:03:01
  ===============================================================================
  
  ===============================================================================
  Transcript output started: 2023-03-20 18:04:07
  
  ===============================================================================
  +=============================================================================+
  | |
  | Summary of Coupling Setup |
  | |
  +=============================================================================+
  ===============================================================================
  
  +=============================================================================+
  | Coupling Participants (2) |
  +=============================================================================+
  | |
  | Participant: Fluid Flow (Fluent) |
  | Type : FLUENT |
  | UpdateControls: |
  | Option : ProgramControlled |
  | Region: fluid-solid_interface |
  | Topology : Surface |
  | Input Variables : displacement |
  | Output Variables : force |
  | Variable: displacement |
  | Quantity Type : Incremental Displacement |
  | Location : Node |
  | Tensor Type : Vector |
  | Is Extensive : False |
  | Data Type : Real |
  | Variable: force |
  | Quantity Type : Force |
  | Location : Element |
  | Tensor Type : Vector |
  | Is Extensive : True |
  | Data Type : Real |
  | |
  +-----------------------------------------------------------------------------+
  | |
  | Participant: Static Structural |
  | Type : MAPDL |
  | UpdateControls: |
  | Option : ProgramControlled |
  | Region: System Coupling Region |
  | Topology : Surface |
  | Input Variables : Force, Force_Density |
  | Output Variables : Incremental_Displacement |
  | Variable: Force |
  | Quantity Type : Force |
  | Location : Node |
  | Tensor Type : Vector |
  | Is Extensive : True |
  | Data Type : Real |
  | Variable: Incremental_Displacement |
  | Quantity Type : Incremental Displacement |
  | Location : Node |
  | Tensor Type : Vector |
  | Is Extensive : False |
  | Data Type : Real |
  | |
  +=============================================================================+
  | Analysis Control |
  +=============================================================================+
  | |
  | Analysis Type : Steady |
  | Global Stabilization : None |
  | OptimizeIfOneWay : False |
  | AllowSimultaneousUpdate : False |
  | PartitioningAlgorithm : SharedAllocateMachines |
  | |
  +=============================================================================+
  | Coupling Interfaces (1) |
  +=============================================================================+
  | |
  | Interface: interface-1 |
  | Side: One |
  | Coupling Participant : Fluid Flow (Fluent) |
  | Region List : fluid-solid_interface |
  | Reference Frame : GlobalReferenceFrame |
  | Side: Two |
  | Coupling Participant : Static Structural |
  | Region List : System Coupling Region |
  | Reference Frame : GlobalReferenceFrame |
  | Data Transfer: Data Transfer |
  | Suppress : False |
  | Target Side : Two |
  | Source Variable : force |
  | Target Variable : Force |
  | Mapping Type : Surface Conservative |
  | Convergence Target : 1.00E-02 |
  | Ramping Option : None |
  | Relaxation Factor : 1.00E+00 |
  | Data Transfer: Data Transfer 2 |
  | Suppress : False |
  | Target Side : One |
  | Source Variable : Incremental_Displacement |
  | Target Variable : displacement |
  | Unmapped Value Option : Nearest Value |
  | Mapping Type : Surface Profile Preserving |
  | Convergence Target : 1.00E-02 |
  | Ramping Option : None |
  | Relaxation Factor : 1.00E+00 |
  | Mapping Control: |
  | Absolute Gap Tolerance : 0.0 [m] |
  | Face Alignment : ProgramControlled |
  | Poor Intersection Threshold : 5.00e-01 |
  | Relative Gap Tolerance : 1.00e+00 |
  | Stop If Poor Intersection : True |
  | |
  +=============================================================================+
  | Solution Control |
  +=============================================================================+
  | |
  | Duration Option : NumberOfSteps |
  | Maximum Iterations : 2 |
  | Minimum Iterations : 1 |
  | Number Of Steps : 80 |
  | |
  +=============================================================================+
  | Output Control |
  +=============================================================================+
  | |
  | Output Control Option : LastStep |
  | Results |
  | IncludeInstances : ProgramControlled |
  | Option : Off |
  | Write Initial Snapshot : True |
  | |
  +=============================================================================+
  
  +-----------------------------------------------------------------------------+
  | Warnings were found during data model validation. |
  +-----------------------------------------------------------------------------+
  | Warning: Participant Static Structural (CouplingParticipant:Solution) has |
  | the ExecutionControl 'Option' set to 'ExternallyManaged'. System |
  | Coupling will not control the startup/shutdown behavior of this |
  | participant. |
  | Warning: Participant Fluid Flow (Fluent) (CouplingParticipant:Solution 1) |
  | has the ExecutionControl 'Option' set to 'ExternallyManaged'. System |
  | Coupling will not control the startup/shutdown behavior of this |
  | participant. |
  +-----------------------------------------------------------------------------+
  
  +-----------------------------------------------------------------------------+
  | The variable locations of force and heatflow variables for all Fluent |
  | participants are set to 'Element'. Make sure that this is consistent with |
  | the setup within Fluent. When importing the SCI file (this includes running |
  | inside Workbench), you can control the locations of these variables by |
  | using the 'SYC_FLUENT_CONSNODAL' environment variable. For more |
  | information, refer to System Coupling User's Guide. |
  +-----------------------------------------------------------------------------+
  Awaiting connections from coupling participants...
  +-----------------------------------------------------------------------------+
  | "System coupling solution stopped before all participants connected. A |
  | solver failure occurred during the run in the Fluid Flow (Fluent) system" |
  +-----------------------------------------------------------------------------+
  
  Transcript output stopped: 2023-03-20 18:04:27
  ===============================================================================
  
  This file may contain appended logs from a sequence of runs, with the most
  recent output reported at the end of the file.
  
  ===============================================================================
  Transcript output started: 2023-03-20 17:59:24
  
  ===============================================================================
  +=============================================================================+
  | |
  | Summary of Coupling Setup |
  | |
  +=============================================================================+
  ===============================================================================
  
  +=============================================================================+
  | Coupling Participants (2) |
  +=============================================================================+
  | |
  | Participant: Fluid Flow (Fluent) |
  | Type : FLUENT |
  | UpdateControls: |
  | Option : ProgramControlled |
  | Region: fluid-solid_interface |
  | Topology : Surface |
  | Input Variables : displacement |
  | Output Variables : force |
  | Variable: displacement |
  | Quantity Type : Incremental Displacement |
  | Location : Node |
  | Tensor Type : Vector |
  | Is Extensive : False |
  | Data Type : Real |
  | Variable: force |
  | Quantity Type : Force |
  | Location : Element |
  | Tensor Type : Vector |
  | Is Extensive : True |
  | Data Type : Real |
  | |
  +-----------------------------------------------------------------------------+
  | |
  | Participant: Static Structural |
  | Type : MAPDL |
  | UpdateControls: |
  | Option : ProgramControlled |
  | Region: Fluid Solid Interface |
  | Topology : Surface |
  | Input Variables : Force, Force_Density |
  | Output Variables : Incremental_Displacement |
  | Variable: Force |
  | Quantity Type : Force |
  | Location : Node |
  | Tensor Type : Vector |
  | Is Extensive : True |
  | Data Type : Real |
  | Variable: Incremental_Displacement |
  | Quantity Type : Incremental Displacement |
  | Location : Node |
  | Tensor Type : Vector |
  | Is Extensive : False |
  | Data Type : Real |
  | |
  +=============================================================================+
  | Analysis Control |
  +=============================================================================+
  | |
  | Analysis Type : Steady |
  | Global Stabilization : None |
  | OptimizeIfOneWay : False |
  | AllowSimultaneousUpdate : False |
  | PartitioningAlgorithm : SharedAllocateMachines |
  | |
  +=============================================================================+
  | Coupling Interfaces (1) |
  +=============================================================================+
  | |
  | Interface: interface-1 |
  | Side: One |
  | Coupling Participant : Static Structural |
  | Region List : Fluid Solid Interface |
  | Reference Frame : GlobalReferenceFrame |
  | Side: Two |
  | Coupling Participant : Fluid Flow (Fluent) |
  | Region List : fluid-solid_interface |
  | Reference Frame : GlobalReferenceFrame |
  | Data Transfer: Data Transfer |
  | Suppress : False |
  | Target Side : Two |
  | Source Variable : Incremental_Displacement |
  | Target Variable : displacement |
  | Unmapped Value Option : Nearest Value |
  | Mapping Type : Surface Profile Preserving |
  | Convergence Target : 1.00E-02 |
  | Ramping Option : None |
  | Relaxation Factor : 1.00E+00 |
  | Data Transfer: Data Transfer 2 |
  | Suppress : False |
  | Target Side : One |
  | Source Variable : force |
  | Target Variable : Force |
  | Mapping Type : Surface Conservative |
  | Convergence Target : 1.00E-02 |
  | Ramping Option : None |
  | Relaxation Factor : 1.00E+00 |
  | Mapping Control: |
  | Absolute Gap Tolerance : 0.0 [m] |
  | Face Alignment : ProgramControlled |
  | Poor Intersection Threshold : 5.00e-01 |
  | Relative Gap Tolerance : 1.00e+00 |
  | Stop If Poor Intersection : True |
  | |
  +=============================================================================+
  | Solution Control |
  +=============================================================================+
  | |
  | Duration Option : NumberOfSteps |
  | Maximum Iterations : 2 |
  | Minimum Iterations : 1 |
  | Number Of Steps : 80 |
  | |
  +=============================================================================+
  | Output Control |
  +=============================================================================+
  | |
  | Output Control Option : LastStep |
  | Results |
  | IncludeInstances : ProgramControlled |
  | Option : Off |
  | Write Initial Snapshot : True |
  | |
  +=============================================================================+
  
  +-----------------------------------------------------------------------------+
  | Warnings were found during data model validation. |
  +-----------------------------------------------------------------------------+
  | Warning: Participant Static Structural (CouplingParticipant:Solution) has |
  | the ExecutionControl 'Option' set to 'ExternallyManaged'. System |
  | Coupling will not control the startup/shutdown behavior of this |
  | participant. |
  | Warning: Participant Fluid Flow (Fluent) (CouplingParticipant:Solution 1) |
  | has the ExecutionControl 'Option' set to 'ExternallyManaged'. System |
  | Coupling will not control the startup/shutdown behavior of this |
  | participant. |
  +-----------------------------------------------------------------------------+
  
  +-----------------------------------------------------------------------------+
  | The variable locations of force and heatflow variables for all Fluent |
  | participants are set to 'Element'. Make sure that this is consistent with |
  | the setup within Fluent. When importing the SCI file (this includes running |
  | inside Workbench), you can control the locations of these variables by |
  | using the 'SYC_FLUENT_CONSNODAL' environment variable. For more |
  | information, refer to System Coupling User's Guide. |
  +-----------------------------------------------------------------------------+
  Awaiting connections from coupling participants...
  +-----------------------------------------------------------------------------+
  | "System coupling solution stopped before all participants connected. A |
  | solver failure occurred during the run in the Fluid Flow (Fluent) system" |
  +-----------------------------------------------------------------------------+
  
  Transcript output stopped: 2023-03-20 17:59:44
  ===============================================================================
  
  ===============================================================================
  Transcript output started: 2023-03-20 18:02:41
  
  ===============================================================================
  +=============================================================================+
  | |
  | Summary of Coupling Setup |
  | |
  +=============================================================================+
  ===============================================================================
  
  +=============================================================================+
  | Coupling Participants (2) |
  +=============================================================================+
  | |
  | Participant: Fluid Flow (Fluent) |
  | Type : FLUENT |
  | UpdateControls: |
  | Option : ProgramControlled |
  | Region: fluid-solid_interface |
  | Topology : Surface |
  | Input Variables : displacement |
  | Output Variables : force |
  | Variable: displacement |
  | Quantity Type : Incremental Displacement |
  | Location : Node |
  | Tensor Type : Vector |
  | Is Extensive : False |
  | Data Type : Real |
  | Variable: force |
  | Quantity Type : Force |
  | Location : Element |
  | Tensor Type : Vector |
  | Is Extensive : True |
  | Data Type : Real |
  | |
  +-----------------------------------------------------------------------------+
  | |
  | Participant: Static Structural |
  | Type : MAPDL |
  | UpdateControls: |
  | Option : ProgramControlled |
  | Region: Fluid Solid Interface |
  | Topology : Surface |
  | Input Variables : Force, Force_Density |
  | Output Variables : Incremental_Displacement |
  | Variable: Force |
  | Quantity Type : Force |
  | Location : Node |
  | Tensor Type : Vector |
  | Is Extensive : True |
  | Data Type : Real |
  | Variable: Incremental_Displacement |
  | Quantity Type : Incremental Displacement |
  | Location : Node |
  | Tensor Type : Vector |
  | Is Extensive : False |
  | Data Type : Real |
  | |
  +=============================================================================+
  | Analysis Control |
  +=============================================================================+
  | |
  | Analysis Type : Steady |
  | Global Stabilization : None |
  | OptimizeIfOneWay : False |
  | AllowSimultaneousUpdate : False |
  | PartitioningAlgorithm : SharedAllocateMachines |
  | |
  +=============================================================================+
  | Coupling Interfaces (1) |
  +=============================================================================+
  | |
  | Interface: interface-1 |
  | Side: One |
  | Coupling Participant : Static Structural |
  | Region List : Fluid Solid Interface |
  | Reference Frame : GlobalReferenceFrame |
  | Side: Two |
  | Coupling Participant : Fluid Flow (Fluent) |
  | Region List : fluid-solid_interface |
  | Reference Frame : GlobalReferenceFrame |
  | Data Transfer: Data Transfer |
  | Suppress : False |
  | Target Side : Two |
  | Source Variable : Incremental_Displacement |
  | Target Variable : displacement |
  | Unmapped Value Option : Nearest Value |
  | Mapping Type : Surface Profile Preserving |
  | Convergence Target : 1.00E-02 |
  | Ramping Option : None |
  | Relaxation Factor : 1.00E+00 |
  | Data Transfer: Data Transfer 2 |
  | Suppress : False |
  | Target Side : One |
  | Source Variable : force |
  | Target Variable : Force |
  | Mapping Type : Surface Conservative |
  | Convergence Target : 1.00E-02 |
  | Ramping Option : None |
  | Relaxation Factor : 1.00E+00 |
  | Mapping Control: |
  | Absolute Gap Tolerance : 0.0 [m] |
  | Face Alignment : ProgramControlled |
  | Poor Intersection Threshold : 5.00e-01 |
  | Relative Gap Tolerance : 1.00e+00 |
  | Stop If Poor Intersection : True |
  | |
  +=============================================================================+
  | Solution Control |
  +=============================================================================+
  | |
  | Duration Option : NumberOfSteps |
  | Maximum Iterations : 2 |
  | Minimum Iterations : 1 |
  | Number Of Steps : 80 |
  | |
  +=============================================================================+
  | Output Control |
  +=============================================================================+
  | |
  | Output Control Option : LastStep |
  | Results |
  | IncludeInstances : ProgramControlled |
  | Option : Off |
  | Write Initial Snapshot : True |
  | |
  +=============================================================================+
  
  +-----------------------------------------------------------------------------+
  | Warnings were found during data model validation. |
  +-----------------------------------------------------------------------------+
  | Warning: Participant Static Structural (CouplingParticipant:Solution) has |
  | the ExecutionControl 'Option' set to 'ExternallyManaged'. System |
  | Coupling will not control the startup/shutdown behavior of this |
  | participant. |
  | Warning: Participant Fluid Flow (Fluent) (CouplingParticipant:Solution 1) |
  | has the ExecutionControl 'Option' set to 'ExternallyManaged'. System |
  | Coupling will not control the startup/shutdown behavior of this |
  | participant. |
  +-----------------------------------------------------------------------------+
  
  +-----------------------------------------------------------------------------+
  | The variable locations of force and heatflow variables for all Fluent |
  | participants are set to 'Element'. Make sure that this is consistent with |
  | the setup within Fluent. When importing the SCI file (this includes running |
  | inside Workbench), you can control the locations of these variables by |
  | using the 'SYC_FLUENT_CONSNODAL' environment variable. For more |
  | information, refer to System Coupling User's Guide. |
  +-----------------------------------------------------------------------------+
  Awaiting connections from coupling participants...
  +-----------------------------------------------------------------------------+
  | "System coupling solution stopped before all participants connected. A |
  | solver failure occurred during the run in the Fluid Flow (Fluent) system" |
  +-----------------------------------------------------------------------------+
  
  Transcript output stopped: 2023-03-20 18:03:01
  ===============================================================================
  
  ===============================================================================
  Transcript output started: 2023-03-20 18:04:07
  
  ===============================================================================
  +=============================================================================+
  | |
  | Summary of Coupling Setup |
  | |
  +=============================================================================+
  ===============================================================================
  
  +=============================================================================+
  | Coupling Participants (2) |
  +=============================================================================+
  | |
  | Participant: Fluid Flow (Fluent) |
  | Type : FLUENT |
  | UpdateControls: |
  | Option : ProgramControlled |
  | Region: fluid-solid_interface |
  | Topology : Surface |
  | Input Variables : displacement |
  | Output Variables : force |
  | Variable: displacement |
  | Quantity Type : Incremental Displacement |
  | Location : Node |
  | Tensor Type : Vector |
  | Is Extensive : False |
  | Data Type : Real |
  | Variable: force |
  | Quantity Type : Force |
  | Location : Element |
  | Tensor Type : Vector |
  | Is Extensive : True |
  | Data Type : Real |
  | |
  +-----------------------------------------------------------------------------+
  | |
  | Participant: Static Structural |
  | Type : MAPDL |
  | UpdateControls: |
  | Option : ProgramControlled |
  | Region: System Coupling Region |
  | Topology : Surface |
  | Input Variables : Force, Force_Density |
  | Output Variables : Incremental_Displacement |
  | Variable: Force |
  | Quantity Type : Force |
  | Location : Node |
  | Tensor Type : Vector |
  | Is Extensive : True |
  | Data Type : Real |
  | Variable: Incremental_Displacement |
  | Quantity Type : Incremental Displacement |
  | Location : Node |
  | Tensor Type : Vector |
  | Is Extensive : False |
  | Data Type : Real |
  | |
  +=============================================================================+
  | Analysis Control |
  +=============================================================================+
  | |
  | Analysis Type : Steady |
  | Global Stabilization : None |
  | OptimizeIfOneWay : False |
  | AllowSimultaneousUpdate : False |
  | PartitioningAlgorithm : SharedAllocateMachines |
  | |
  +=============================================================================+
  | Coupling Interfaces (1) |
  +=============================================================================+
  | |
  | Interface: interface-1 |
  | Side: One |
  | Coupling Participant : Fluid Flow (Fluent) |
  | Region List : fluid-solid_interface |
  | Reference Frame : GlobalReferenceFrame |
  | Side: Two |
  | Coupling Participant : Static Structural |
  | Region List : System Coupling Region |
  | Reference Frame : GlobalReferenceFrame |
  | Data Transfer: Data Transfer |
  | Suppress : False |
  | Target Side : Two |
  | Source Variable : force |
  | Target Variable : Force |
  | Mapping Type : Surface Conservative |
  | Convergence Target : 1.00E-02 |
  | Ramping Option : None |
  | Relaxation Factor : 1.00E+00 |
  | Data Transfer: Data Transfer 2 |
  | Suppress : False |
  | Target Side : One |
  | Source Variable : Incremental_Displacement |
  | Target Variable : displacement |
  | Unmapped Value Option : Nearest Value |
  | Mapping Type : Surface Profile Preserving |
  | Convergence Target : 1.00E-02 |
  | Ramping Option : None |
  | Relaxation Factor : 1.00E+00 |
  | Mapping Control: |
  | Absolute Gap Tolerance : 0.0 [m] |
  | Face Alignment : ProgramControlled |
  | Poor Intersection Threshold : 5.00e-01 |
  | Relative Gap Tolerance : 1.00e+00 |
  | Stop If Poor Intersection : True |
  | |
  +=============================================================================+
  | Solution Control |
  +=============================================================================+
  | |
  | Duration Option : NumberOfSteps |
  | Maximum Iterations : 2 |
  | Minimum Iterations : 1 |
  | Number Of Steps : 80 |
  | |
  +=============================================================================+
  | Output Control |
  +=============================================================================+
  | |
  | Output Control Option : LastStep |
  | Results |
  | IncludeInstances : ProgramControlled |
  | Option : Off |
  | Write Initial Snapshot : True |
  | |
  +=============================================================================+
  
  +-----------------------------------------------------------------------------+
  | Warnings were found during data model validation. |
  +-----------------------------------------------------------------------------+
  | Warning: Participant Static Structural (CouplingParticipant:Solution) has |
  | the ExecutionControl 'Option' set to 'ExternallyManaged'. System |
  | Coupling will not control the startup/shutdown behavior of this |
  | participant. |
  | Warning: Participant Fluid Flow (Fluent) (CouplingParticipant:Solution 1) |
  | has the ExecutionControl 'Option' set to 'ExternallyManaged'. System |
  | Coupling will not control the startup/shutdown behavior of this |
  | participant. |
  +-----------------------------------------------------------------------------+
  
  +-----------------------------------------------------------------------------+
  | The variable locations of force and heatflow variables for all Fluent |
  | participants are set to 'Element'. Make sure that this is consistent with |
  | the setup within Fluent. When importing the SCI file (this includes running |
  | inside Workbench), you can control the locations of these variables by |
  | using the 'SYC_FLUENT_CONSNODAL' environment variable. For more |
  | information, refer to System Coupling User's Guide. |
  +-----------------------------------------------------------------------------+
  Awaiting connections from coupling participants...
  +-----------------------------------------------------------------------------+
  | "System coupling solution stopped before all participants connected. A |
  | solver failure occurred during the run in the Fluid Flow (Fluent) system" |
  +-----------------------------------------------------------------------------+
  
  Transcript output stopped: 2023-03-20 18:04:27
  ===============================================================================
  
  This file may contain appended logs from a sequence of runs, with the most
  recent output reported at the end of the file.
  ===============================================================================
  Transcript output started: 2023-03-20 17:59:24
  
  ===============================================================================
  +=============================================================================+
  | |
  | Summary of Coupling Setup |
  | |
  +=============================================================================+
  ===============================================================================
  +=============================================================================+
  | Coupling Participants (2) |
  +=============================================================================+
  | |
  | Participant: Fluid Flow (Fluent) |
  | Type : FLUENT |
  | UpdateControls: |
  | Option : ProgramControlled |
  | Region: fluid-solid_interface |
  | Topology : Surface |
  | Input Variables : displacement |
  | Output Variables : force |
  | Variable: displacement |
  | Quantity Type : Incremental Displacement |
  | Location : Node |
  | Tensor Type : Vector |
  | Is Extensive : False |
  | Data Type : Real |
  | Variable: force |
  | Quantity Type : Force |
  | Location : Element |
  | Tensor Type : Vector |
  | Is Extensive : True |
  | Data Type : Real |
  | |
  +-----------------------------------------------------------------------------+
  | |
  | Participant: Static Structural |
  | Type : MAPDL |
  | UpdateControls: |
  | Option : ProgramControlled |
  | Region: Fluid Solid Interface |
  | Topology : Surface |
  | Input Variables : Force, Force_Density |
  | Output Variables : Incremental_Displacement |
  | Variable: Force |
  | Quantity Type : Force |
  | Location : Node |
  | Tensor Type : Vector |
  | Is Extensive : True |
  | Data Type : Real |
  | Variable: Incremental_Displacement |
  | Quantity Type : Incremental Displacement |
  | Location : Node |
  | Tensor Type : Vector |
  | Is Extensive : False |
  | Data Type : Real |
  | |
  +=============================================================================+
  | Analysis Control |
  +=============================================================================+
  | |
  | Analysis Type : Steady |
  | Global Stabilization : None |
  | OptimizeIfOneWay : False |
  | AllowSimultaneousUpdate : False |
  | PartitioningAlgorithm : SharedAllocateMachines |
  | |
  +=============================================================================+
  | Coupling Interfaces (1) |
  +=============================================================================+
  | |
  | Interface: interface-1 |
  | Side: One |
  | Coupling Participant : Static Structural |
  | Region List : Fluid Solid Interface |
  | Reference Frame : GlobalReferenceFrame |
  | Side: Two |
  | Coupling Participant : Fluid Flow (Fluent) |
  | Region List : fluid-solid_interface |
  | Reference Frame : GlobalReferenceFrame |
  | Data Transfer: Data Transfer |
  | Suppress : False |
  | Target Side : Two |
  | Source Variable : Incremental_Displacement |
  | Target Variable : displacement |
  | Unmapped Value Option : Nearest Value |
  | Mapping Type : Surface Profile Preserving |
  | Convergence Target : 1.00E-02 |
  | Ramping Option : None |
  | Relaxation Factor : 1.00E+00 |
  | Data Transfer: Data Transfer 2 |
  | Suppress : False |
  | Target Side : One |
  | Source Variable : force |
  | Target Variable : Force |
  | Mapping Type : Surface Conservative |
  | Convergence Target : 1.00E-02 |
  | Ramping Option : None |
  | Relaxation Factor : 1.00E+00 |
  | Mapping Control: |
  | Absolute Gap Tolerance : 0.0 [m] |
  | Face Alignment : ProgramControlled |
  | Poor Intersection Threshold : 5.00e-01 |
  | Relative Gap Tolerance : 1.00e+00 |
  | Stop If Poor Intersection : True |
  | |
  +=============================================================================+
  | Solution Control |
  +=============================================================================+
  | |
  | Duration Option : NumberOfSteps |
  | Maximum Iterations : 2 |
  | Minimum Iterations : 1 |
  | Number Of Steps : 80 |
  | |
  +=============================================================================+
  | Output Control |
  +=============================================================================+
  | |
  | Output Control Option : LastStep |
  | Results |
  | IncludeInstances : ProgramControlled |
  | Option : Off |
  | Write Initial Snapshot : True |
  | |
  +=============================================================================+
  +-----------------------------------------------------------------------------+
  | Warnings were found during data model validation. |
  +-----------------------------------------------------------------------------+
  | Warning: Participant Static Structural (CouplingParticipant:Solution) has |
  | the ExecutionControl 'Option' set to 'ExternallyManaged'. System |
  | Coupling will not control the startup/shutdown behavior of this |
  | participant. |
  | Warning: Participant Fluid Flow (Fluent) (CouplingParticipant:Solution 1) |
  | has the ExecutionControl 'Option' set to 'ExternallyManaged'. System |
  | Coupling will not control the startup/shutdown behavior of this |
  | participant. |
  +-----------------------------------------------------------------------------+
  
  +-----------------------------------------------------------------------------+
  | The variable locations of force and heatflow variables for all Fluent |
  | participants are set to 'Element'. Make sure that this is consistent with |
  | the setup within Fluent. When importing the SCI file (this includes running |
  | inside Workbench), you can control the locations of these variables by |
  | using the 'SYC_FLUENT_CONSNODAL' environment variable. For more |
  | information, refer to System Coupling User's Guide. |
  +-----------------------------------------------------------------------------+
  Awaiting connections from coupling participants...
  +-----------------------------------------------------------------------------+
  | "System coupling solution stopped before all participants connected. A |
  | solver failure occurred during the run in the Fluid Flow (Fluent) system" |
  +-----------------------------------------------------------------------------+
  Transcript output stopped: 2023-03-20 17:59:44
  ===============================================================================
  ===============================================================================
  Transcript output started: 2023-03-20 18:02:41
  
  ===============================================================================
  +=============================================================================+
  | |
  | Summary of Coupling Setup |
  | |
  +=============================================================================+
  ===============================================================================
  +=============================================================================+
  | Coupling Participants (2) |
  +=============================================================================+
  | |
  | Participant: Fluid Flow (Fluent) |
  | Type : FLUENT |
  | UpdateControls: |
  | Option : ProgramControlled |
  | Region: fluid-solid_interface |
  | Topology : Surface |
  | Input Variables : displacement |
  | Output Variables : force |
  | Variable: displacement |
  | Quantity Type : Incremental Displacement |
  | Location : Node |
  | Tensor Type : Vector |
  | Is Extensive : False |
  | Data Type : Real |
  | Variable: force |
  | Quantity Type : Force |
  | Location : Element |
  | Tensor Type : Vector |
  | Is Extensive : True |
  | Data Type : Real |
  | |
  +-----------------------------------------------------------------------------+
  | |
  | Participant: Static Structural |
  | Type : MAPDL |
  | UpdateControls: |
  | Option : ProgramControlled |
  | Region: Fluid Solid Interface |
  | Topology : Surface |
  | Input Variables : Force, Force_Density |
  | Output Variables : Incremental_Displacement |
  | Variable: Force |
  | Quantity Type : Force |
  | Location : Node |
  | Tensor Type : Vector |
  | Is Extensive : True |
  | Data Type : Real |
  | Variable: Incremental_Displacement |
  | Quantity Type : Incremental Displacement |
  | Location : Node |
  | Tensor Type : Vector |
  | Is Extensive : False |
  | Data Type : Real |
  | |
  +=============================================================================+
  | Analysis Control |
  +=============================================================================+
  | |
  | Analysis Type : Steady |
  | Global Stabilization : None |
  | OptimizeIfOneWay : False |
  | AllowSimultaneousUpdate : False |
  | PartitioningAlgorithm : SharedAllocateMachines |
  | |
  +=============================================================================+
  | Coupling Interfaces (1) |
  +=============================================================================+
  | |
  | Interface: interface-1 |
  | Side: One |
  | Coupling Participant : Static Structural |
  | Region List : Fluid Solid Interface |
  | Reference Frame : GlobalReferenceFrame |
  | Side: Two |
  | Coupling Participant : Fluid Flow (Fluent) |
  | Region List : fluid-solid_interface |
  | Reference Frame : GlobalReferenceFrame |
  | Data Transfer: Data Transfer |
  | Suppress : False |
  | Target Side : Two |
  | Source Variable : Incremental_Displacement |
  | Target Variable : displacement |
  | Unmapped Value Option : Nearest Value |
  | Mapping Type : Surface Profile Preserving |
  | Convergence Target : 1.00E-02 |
  | Ramping Option : None |
  | Relaxation Factor : 1.00E+00 |
  | Data Transfer: Data Transfer 2 |
  | Suppress : False |
  | Target Side : One |
  | Source Variable : force |
  | Target Variable : Force |
  | Mapping Type : Surface Conservative |
  | Convergence Target : 1.00E-02 |
  | Ramping Option : None |
  | Relaxation Factor : 1.00E+00 |
  | Mapping Control: |
  | Absolute Gap Tolerance : 0.0 [m] |
  | Face Alignment : ProgramControlled |
  | Poor Intersection Threshold : 5.00e-01 |
  | Relative Gap Tolerance : 1.00e+00 |
  | Stop If Poor Intersection : True |
  | |
  +=============================================================================+
  | Solution Control |
  +=============================================================================+
  | |
  | Duration Option : NumberOfSteps |
  | Maximum Iterations : 2 |
  | Minimum Iterations : 1 |
  | Number Of Steps : 80 |
  | |
  +=============================================================================+
  | Output Control |
  +=============================================================================+
  | |
  | Output Control Option : LastStep |
  | Results |
  | IncludeInstances : ProgramControlled |
  | Option : Off |
  | Write Initial Snapshot : True |
  | |
  +=============================================================================+
  +-----------------------------------------------------------------------------+
  | Warnings were found during data model validation. |
  +-----------------------------------------------------------------------------+
  | Warning: Participant Static Structural (CouplingParticipant:Solution) has |
  | the ExecutionControl 'Option' set to 'ExternallyManaged'. System |
  | Coupling will not control the startup/shutdown behavior of this |
  | participant. |
  | Warning: Participant Fluid Flow (Fluent) (CouplingParticipant:Solution 1) |
  | has the ExecutionControl 'Option' set to 'ExternallyManaged'. System |
  | Coupling will not control the startup/shutdown behavior of this |
  | participant. |
  +-----------------------------------------------------------------------------+
  
  +-----------------------------------------------------------------------------+
  | The variable locations of force and heatflow variables for all Fluent |
  | participants are set to 'Element'. Make sure that this is consistent with |
  | the setup within Fluent. When importing the SCI file (this includes running |
  | inside Workbench), you can control the locations of these variables by |
  | using the 'SYC_FLUENT_CONSNODAL' environment variable. For more |
  | information, refer to System Coupling User's Guide. |
  +-----------------------------------------------------------------------------+
  Awaiting connections from coupling participants...
  +-----------------------------------------------------------------------------+
  | "System coupling solution stopped before all participants connected. A |
  | solver failure occurred during the run in the Fluid Flow (Fluent) system" |
  +-----------------------------------------------------------------------------+
  Transcript output stopped: 2023-03-20 18:03:01
  ===============================================================================
  ===============================================================================
  Transcript output started: 2023-03-20 18:04:07
  
  ===============================================================================
  +=============================================================================+
  | |
  | Summary of Coupling Setup |
  | |
  +=============================================================================+
  ===============================================================================
  +=============================================================================+
  | Coupling Participants (2) |
  +=============================================================================+
  | |
  | Participant: Fluid Flow (Fluent) |
  | Type : FLUENT |
  | UpdateControls: |
  | Option : ProgramControlled |
  | Region: fluid-solid_interface |
  | Topology : Surface |
  | Input Variables : displacement |
  | Output Variables : force |
  | Variable: displacement |
  | Quantity Type : Incremental Displacement |
  | Location : Node |
  | Tensor Type : Vector |
  | Is Extensive : False |
  | Data Type : Real |
  | Variable: force |
  | Quantity Type : Force |
  | Location : Element |
  | Tensor Type : Vector |
  | Is Extensive : True |
  | Data Type : Real |
  | |
  +-----------------------------------------------------------------------------+
  | |
  | Participant: Static Structural |
  | Type : MAPDL |
  | UpdateControls: |
  | Option : ProgramControlled |
  | Region: System Coupling Region |
  | Topology : Surface |
  | Input Variables : Force, Force_Density |
  | Output Variables : Incremental_Displacement |
  | Variable: Force |
  | Quantity Type : Force |
  | Location : Node |
  | Tensor Type : Vector |
  | Is Extensive : True |
  | Data Type : Real |
  | Variable: Incremental_Displacement |
  | Quantity Type : Incremental Displacement |
  | Location : Node |
  | Tensor Type : Vector |
  | Is Extensive : False |
  | Data Type : Real |
  | |
  +=============================================================================+
  | Analysis Control |
  +=============================================================================+
  | |
  | Analysis Type : Steady |
  | Global Stabilization : None |
  | OptimizeIfOneWay : False |
  | AllowSimultaneousUpdate : False |
  | PartitioningAlgorithm : SharedAllocateMachines |
  | |
  +=============================================================================+
  | Coupling Interfaces (1) |
  +=============================================================================+
  | |
  | Interface: interface-1 |
  | Side: One |
  | Coupling Participant : Fluid Flow (Fluent) |
  | Region List : fluid-solid_interface |
  | Reference Frame : GlobalReferenceFrame |
  | Side: Two |
  | Coupling Participant : Static Structural |
  | Region List : System Coupling Region |
  | Reference Frame : GlobalReferenceFrame |
  | Data Transfer: Data Transfer |
  | Suppress : False |
  | Target Side : Two |
  | Source Variable : force |
  | Target Variable : Force |
  | Mapping Type : Surface Conservative |
  | Convergence Target : 1.00E-02 |
  | Ramping Option : None |
  | Relaxation Factor : 1.00E+00 |
  | Data Transfer: Data Transfer 2 |
  | Suppress : False |
  | Target Side : One |
  | Source Variable : Incremental_Displacement |
  | Target Variable : displacement |
  | Unmapped Value Option : Nearest Value |
  | Mapping Type : Surface Profile Preserving |
  | Convergence Target : 1.00E-02 |
  | Ramping Option : None |
  | Relaxation Factor : 1.00E+00 |
  | Mapping Control: |
  | Absolute Gap Tolerance : 0.0 [m] |
  | Face Alignment : ProgramControlled |
  | Poor Intersection Threshold : 5.00e-01 |
  | Relative Gap Tolerance : 1.00e+00 |
  | Stop If Poor Intersection : True |
  | |
  +=============================================================================+
  | Solution Control |
  +=============================================================================+
  | |
  | Duration Option : NumberOfSteps |
  | Maximum Iterations : 2 |
  | Minimum Iterations : 1 |
  | Number Of Steps : 80 |
  | |
  +=============================================================================+
  | Output Control |
  +=============================================================================+
  | |
  | Output Control Option : LastStep |
  | Results |
  | IncludeInstances : ProgramControlled |
  | Option : Off |
  | Write Initial Snapshot : True |
  | |
  +=============================================================================+
  +-----------------------------------------------------------------------------+
  | Warnings were found during data model validation. |
  +-----------------------------------------------------------------------------+
  | Warning: Participant Static Structural (CouplingParticipant:Solution) has |
  | the ExecutionControl 'Option' set to 'ExternallyManaged'. System |
  | Coupling will not control the startup/shutdown behavior of this |
  | participant. |
  | Warning: Participant Fluid Flow (Fluent) (CouplingParticipant:Solution 1) |
  | has the ExecutionControl 'Option' set to 'ExternallyManaged'. System |
  | Coupling will not control the startup/shutdown behavior of this |
  | participant. |
  +-----------------------------------------------------------------------------+
  
  +-----------------------------------------------------------------------------+
  | The variable locations of force and heatflow variables for all Fluent |
  | participants are set to 'Element'. Make sure that this is consistent with |
  | the setup within Fluent. When importing the SCI file (this includes running |
  | inside Workbench), you can control the locations of these variables by |
  | using the 'SYC_FLUENT_CONSNODAL' environment variable. For more |
  | information, refer to System Coupling User's Guide. |
  +-----------------------------------------------------------------------------+
  Awaiting connections from coupling participants...
  +-----------------------------------------------------------------------------+
  | "System coupling solution stopped before all participants connected. A |
  | solver failure occurred during the run in the Fluid Flow (Fluent) system" |
  +-----------------------------------------------------------------------------+
  Transcript output stopped: 2023-03-20 18:04:27
  ===============================================================================
- March 30, 2023 at 9:11 am
  
  RM
  Ansys Employee
  
  Hi,
  From error message in system coupling logs, it is observed that issue is with Fluent setup. Please have a look at the Fluent Transcript file (.trn) to identify the cause of the issue and make necessary changes in Fluent setup.
  I recommend going over this tutorial in the Ansys documentation that shows a 2-way FSI simulation with Fluent and Mechanical to understand the system coupling workflow. https://ansyshelp.ansys.com/account/secured?returnurl=/Views/Secured/corp/v221/en/sysc_tut/sysc_tut_reedvalve_fluent.html

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