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August 18, 2020, 13:17 |
Dynamic Mesh Simulation
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#1 |
New Member
Join Date: Aug 2020
Posts: 2
Rep Power: 0 |
Hi All!
I'm trying to generate a simulation of a rotating mesh that has multiple frames so that it can be played back in Paraview like the Cantilever example in the Structural Mechanics section, but I can't seem to find much information about how to do it. I tried adding the following sections to the config but I think I'm missing something since the mesh doesn't rotate in Paraview when played back: HTML Code:
GRID_MOVEMENT= ROTATING_FRAME MACH_MOTION= 0.8 MOTION_ORIGIN= 0.25 0.0 0.0 ROTATION_RATE = 9.0 9.0 9.0 TRANSLATION_RATE = 4.0 3.0 0.0 Thanks! |
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August 18, 2020, 13:29 |
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#2 |
Senior Member
Pedro Gomes
Join Date: Dec 2017
Posts: 466
Rep Power: 14 |
Hi,
Rotating frame simulations do not move the grid, they just assume the region is rotating without actually moving it, hence the "frozen rotor" designation in the turbomachinery world. In any case, what you want is rigid motion, of the rotating flavor, see TestCases/sliding_interface/rotating_cylinders/ Cheers. |
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August 20, 2020, 20:41 |
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#3 |
New Member
Join Date: Aug 2020
Posts: 2
Rep Power: 0 |
Thanks for the quick reply, sorry it took me some time to get back to you.
I ran the simulation on the test case, and it's hitting: HTML Code:
FGMRES orthogonalization failed, linear solver diverged. This is on the latest MPI download for macOS, is this a known issue/expected? Thanks! Update: When running non-MPI version it ends with: HTML Code:
SU2 has diverged. (Residual > 10^20 detected) Last edited by de098; August 20, 2020 at 21:55. Reason: Providing update. |
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August 21, 2020, 07:00 |
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#4 |
Senior Member
Pedro Gomes
Join Date: Dec 2017
Posts: 466
Rep Power: 14 |
Regression tests are not validation examples.
We use them to detect changes to particular features. Some are a bit contrived so yeah they may diverge after some iterations... But I only pointed you to that case so you can get a reference for the required options. |
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