[TAKILT said]

Hi,
I use OpenFoam v1912 to simulate the movement of the 2D object (hydrofoil in forced pitching motion and free heaving) under the force of the fluid .
I tried it using pimpleDyMFoam but mesh deformation is too big to simulate.
So now I am working on it by using oversetmesh function.
I ran some tutorials about oversetmesh but I could not use oversetmesh(overPimpleDyMFoam) with 6DOF.
How can I use oversetmesh with 6DOF?

[Michael@UW]

Include "libsixDoFRigidBodyMotion.so" in controlDict like

libs            ("liboverset.so" "libfvMotionSolvers.so" "libsixDoFRigidBodyMotion.so");

, then you should be able to use sixDoFRigidBody motion solver.

valid solver types:
14
(
coded
displacementComponentLaplacian
displacementInterpolation
displacementLaplacian
displacementLayeredMotion
displacementSBRStress
multiSolidBodyMotionSolver
[B]sixDoFRigidBodyMotion[/B]
solidBody
solidBodyDisplacementLaplacian
surfaceAlignedSBRStress
velocityComponentLaplacian
velocityDisplacement
velocityLaplacian
)

[frantov]

Hi Michael

Do you know if is possible to model the advection of a solid inside a stream using overset methods?

Since all the functions in SolidBodyMotion require to specify a type of motion for the mesh inside (linear, oscillating etc), but for this case it would be "free motion" due to advection.

any help would be appreciated.

[Michael@UW]

Hi frantov,
From my knowledge, it is not possible to couple overset with this motion in current OpenFoam. The solid is free moving by the force of the fluid, so it’s a Fsi problem and you have to know the force exerted on the solid from the fluid. Maybe foam-extend has this capability, but I am not very familiar with it.

[frantov]

Thanks for your reply, yes that's what Im interested an overset mesh with free movement. I'll keep exploring OF. Good luck on your simulations!

[YongCLee]

Hi frantov,

Have you figured out this problem, I'm also interested.