August 30, 2023 at 3:20 pm
September 1, 2023 at 7:19 amRMAnsys Employee
Do you see any warning/ error in System coupling log file/ mechanical output file?
Is it showing the same behaviour in standalone system coupling as well?
September 7, 2023 at 2:29 pmHB ZSubscriber
I didn't find any error or warning in the log file. When I reduced the number of cores used by fluent, this situation seems to improve, what is the reason for this?
September 7, 2023 at 2:50 pmRMAnsys Employee
Is this same behavior observed with system coupling outside workbench?
System coupling outside WB is more flexible and robust approach.
Please refer Reed Valve FSI Co-Simulation with Partial Setup Export from Workbench (Fluent-Mechanical) (ansys.com) to know more about it.
September 7, 2023 at 2:52 pmHB ZSubscriber
Recently, I set up such a fluid-structure two-way coupling analysis, when I pause the simulation and change the step size and the maximum iterations in the system coupling, and then simulate again, I found that the displacement of the monitor point in the transient structure would deviate from the original trend. The fluent will report an error "Deleting Client...done
Shutting down Server...done Error: Rpc Communication failure during SCAnalysis:GetCouplingDefinitionMethod call at cortexmpc,c:423", followed by a flashback, and finally the simulation stops unexpectedly. I tried not to change any settings, just paused the simulation process, and when I hit the Continue Calculation button in the System Coupling, I also got an error and could not continue.
September 7, 2023 at 3:03 pmRMAnsys Employee
If you have paused the simulation and want to continue to run further.
Follow the procedure shown in following video to restart the run: Restarting a Coupled Analysis in Fluent and Mechanical - YouTube
Hope this helps!
September 8, 2023 at 1:09 amHB ZSubscriber
thank you for your help
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