Weird result using overset mesh

Longbow85 · December 20, 2022, 00:03

Hi guys,

I am a newbie to openFoam. I am trying to simulate a flapping foil in 2D using the overset meshing.
The domain size is 30x10, and the foil is eclosed by moving grids of size 3x2. The BC is a freestream from left to right. The solver I'm using is overPimpleDyMFoam and the mesh kinematic is given by tabulated6DoFMotion. However, the solution is bit weird. The flow seems being confined in the moving grid only, and is not propagating into the background mesh. Please see the attached video.
Any comments or suggestions are greatly appreciated. Thanks!

Karim ahmed · January 13, 2023, 06:48

can you provide the fv scheme dict and fv solver ? to check

SeaFD · February 17, 2024, 20:18

Hi,

Probably a bit late, but might be useful for anyone else with the same problem.
I had the same thing occurring and found the problem.

In the dynamicMeshDict the dynamicFvMesh should be set to dynamicOversetFvMesh whereas I had it set to dynamicMotionSolverFvMesh.

santhou · September 19, 2024, 06:47

same as the problom

CFD_with_Skill-Lync · October 8, 2024, 07:45

HI,
From what I can see, flux correction iterations needs to be added in dynamicMeshDict and fvSolution files. Please let me know if you require help with the syntax!
Thanks
Skill-Lync

October 8, 2024, 07:45	Flux Corrections to be added	#5
CFD_with_Skill-Lync New Member Skill-Lync CFD Join Date: Sep 2024 Location: Chennai Posts: 21 Rep Power: 2	HI, From what I can see, flux correction iterations needs to be added in dynamicMeshDict and fvSolution files. Please let me know if you require help with the syntax! Thanks Skill-Lync

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January 13, 2023, 06:48		#2
Karim ahmed New Member Karim Ahmed Join Date: Nov 2017 Posts: 3 Rep Power: 9	can you provide the fv scheme dict and fv solver ? to check

February 17, 2024, 20:18		#3
SeaFD New Member Join Date: Mar 2016 Posts: 2 Rep Power: 0	Hi, Probably a bit late, but might be useful for anyone else with the same problem. I had the same thing occurring and found the problem. In the dynamicMeshDict the dynamicFvMesh should be set to dynamicOversetFvMesh whereas I had it set to dynamicMotionSolverFvMesh.

September 19, 2024, 06:47		#4
santhou New Member Shen Tsao Hung Join Date: Jun 2024 Posts: 3 Rep Power: 2	same as the problom