March 2, 2022 at 5:15 pmsarbakhshianSubscriber
Hello, I've been trying to verify this Turek-Hron benchmark for FSI simulation, The velocity convergence in x,y and z directions is going well but it is giving me huge values in terms of continuity residuals. How can I reduce continuity residuals for this model? I have tried to refine the mesh and change the solution methods (SIMPLE,SIMPLEC,PISO...) but still having same results. I'm attaching some pictures of residuals and mesh here.
I would appreciate any comments.
thanks.March 3, 2022 at 12:58 pmKarthik RAdministratorHello:
From the residuals plot, it seems to me that you may need to increase the number of iterations in your Fluids simulation. The convergence should at least be 3 orders of magnitude for each residual. This will affect your accuracy.
March 3, 2022 at 5:50 pmsarbakhshianSubscriberMarch 4, 2022 at 2:04 pmStephen OrlandoAnsys EmployeeHi,
Please have a look at this tutorial showing how to set up an FSI case (specifically the dynamic mesh settings in Fluent) for a 2D extruded geometry. https://ansyshelp.ansys.com/account/secured?returnurl=/Views/Secured/corp/v221/en/sysc_tut/sysc_tut_reedvalve_fluent.html
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