This is the report, nothing seem strange also residuals are close to 0 before it fails.
Fluent
Version: 3d, dp, pbns, dynamesh, sstkw, transient (3d, double precision, pressure-based, dynamic mesh, SST k-omega, transient)
Release: 22.2.0
Title:
Models
------
Model Settings
---------------------------------------------------------
Space 3D
Time Unsteady, 2nd-Order Implicit
Viscous SST k-omega turbulence model
Heat Transfer Disabled
Solidification and Melting Disabled
Species Disabled
Coupled Dispersed Phase Disabled
NOx Pollutants Disabled
SOx Pollutants Disabled
Soot Disabled
Mercury Pollutants Disabled
Structure Disabled
Acoustics Disabled
Eulerian Wall Film Disabled
Potential/Li-ion Battery Disabled
Multiphase Disabled
Material Properties
-------------------
Material: wood-maple (solid)
Property Units Method Value(s)
-----------------------------------------------------
Density kg/m^3 constant 532.17
Cp (Specific Heat) J/(kg K) constant 1684.8
Thermal Conductivity W/(m K) constant 0.25826
Material: air (fluid)
Property Units Method Value(s)
-------------------------------------------------------
Density kg/m^3 constant 1.225
Cp (Specific Heat) J/(kg K) constant 1006.43
Thermal Conductivity W/(m K) constant 0.0242
Viscosity kg/(m s) constant 1.7894e-05
Molecular Weight kg/kmol constant 28.966
Material: aluminum (solid)
Property Units Method Value(s)
-----------------------------------------------------
Density kg/m^3 constant 2719
Cp (Specific Heat) J/(kg K) constant 871
Thermal Conductivity W/(m K) constant 202.4
Cell Zone Conditions
--------------------
Zones
name id type
------------------
fluid 4 fluid
Setup Conditions
fluid
Condition Value
---------------------
Frame Motion? no
Mesh Motion? no
Boundary Conditions
-------------------
Zones
name id type
-----------------
walls 5 wall
seed 6 wall
Setup Conditions
walls
Condition Value
------------------------------------------
Wall Motion Stationary Wall
Shear Boundary Condition No Slip
Wall Surface Roughness 0
seed
Condition Value
------------------------------------------
Wall Motion Stationary Wall
Shear Boundary Condition No Slip
Wall Surface Roughness 0
Solver Settings
---------------
Equations
Equation Solved
-------------------
Flow yes
Turbulence yes
Numerics
Numeric Enabled
---------------------------------------
Absolute Velocity Formulation yes
Unsteady Calculation Parameters
---------------------------------
Number of Time Steps 4000
Time Step Size [s] 0.0008
Max Iterations/Time Step 20
Under-Relaxation Factors
Variable Relaxation Factor
---------------------------------------------
Density 1
Body Forces 1
Turbulent Kinetic Energy 0.8
Specific Dissipation Rate 0.8
Turbulent Viscosity 1
Explicit Momentum 0.75
Explicit Pressure 0.75
Linear Solver
Variable Solver Type Termination Criterion Residual Reduction Tolerance
----------------------------------------------------------------------------------------------
Flow F-Cycle 0.1
Turbulent Kinetic Energy Flexible 0.1 0.7
Specific Dissipation Rate Flexible 0.1 0.7
Pressure-Velocity Coupling
Parameter Value
-----------------------------
Type Coupled
Flow Courant Number 200
Discretization Scheme
Variable Scheme
-----------------------------------
Pressure PRESTO!
Momentum QUICK
Turbulent Kinetic Energy QUICK
Specific Dissipation Rate QUICK
Solution Limits
Quantity Limit
---------------------------------------
Minimum Absolute Pressure 1
Maximum Absolute Pressure 5e+10
Minimum Temperature 1
Maximum Temperature 5000
Minimum Turb. Kinetic Energy 1e-14
Minimum Spec. Dissipation Rate 1e-20
Maximum Turb. Viscosity Ratio 100000