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September 4, 2024, 05:46 |
Dynamic Mesh Problem - FSI
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#1 |
New Member
Alice Zanella
Join Date: Oct 2019
Posts: 9
Rep Power: 7 |
Hi everyone,
I'm having some troubles while deforming my mesh during an FSI simulation. The test case is a 2D naca0012 pitching and plunging. I'm using k-omega sst with wall functions and my mesh is unstructured + BL. The problem is that whatever displacementLaplacian method I use, I always end up with a distorsion near the trailing edge and on the pressure side. The crash happens within the first 10-20 timesteps, depending on which diffusivity I choose. This is my dynamicMeshDict: Code:
FoamFile { version 2.0; format ascii; class dictionary; object dynamicMeshDict; } dynamicFvMesh dynamicMotionSolverFvMesh; motionSolverLibs ("libfvMotionSolvers.so"); solver displacementLaplacian; // OpenFOAM9 or newer: rename "solver" to "motionSolver" displacementLaplacianCoeffs { //diffusivity quadratic inverseDistance 1 (airfoil); // diffusivity inverseDistance (airfoil); diffusivity quadratic inverseDistance 1 (airfoil); // diffusivity exponential 0.25 inverseDistance (airfoil); } Do you have any ideas how to solve this problem? Thank you! |
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displacementlaplacian, dynamic mesh, fsi, morphing |
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