Dynamic mesh for deformable body

gascortado · January 13, 2011, 14:24

Hi.

Im trying to solve the interaction between a flexible plate inside a turbulent flow in 2d using pimpleDyMFoam. I want to determine the deformation of the plate from the pressure forces applied to the plate. I've been searching the forums for a while and cant seem to find anything other that deformable mesh generation for solid body motion of the boundaries.

for this specific problem I need to be able to specify the location of the solid-fluid boundary after each time step. HOW DO I DO THAT?

In the dynamic mesh dictonary it seems that only the velocity of the mesh (not the displacement) can be specified and the the velocity specified if for the entire boundary patch. Is that fair to say?

Any link or help will be greatly appreciated. Thanks

paka · January 13, 2011, 18:38

If I can ask, why did you decide to use pimpleDyMFoam solve. Does it have full FSI capability?

gascortado · January 14, 2011, 10:24

I will implement my own FE code for the deformation of the plate.

sleepdeprivation · January 14, 2011, 13:04

Check out http://www.openfoamworkshop.org/2009...ynamicMesh.pdf

Specifically start looking at the dynamicFvMesh and dynamicMotionSolverFvMesh classes and their sub-classes. I've only done solid body motion functions myself, so I'm not really sure what's available for point motion.

elvis · January 14, 2011, 13:36

Hi,
have you visited FreeCASE
http://www.aero.polimi.it/freecase/?...%2B_Code_Aster

i did not understand how they implemented FSI (OpenFoam [CFD]<->Code Aster[FEM]),
but i think it goes in the direction you want to use.

gascortado · January 14, 2011, 14:19

thanks for the link. I'll check it out.

January 13, 2011, 14:24	Dynamic mesh for deformable body	#1
gascortado Member Santiago Join Date: Dec 2009 Posts: 85 Rep Power: 16	Hi. Im trying to solve the interaction between a flexible plate inside a turbulent flow in 2d using pimpleDyMFoam. I want to determine the deformation of the plate from the pressure forces applied to the plate. I've been searching the forums for a while and cant seem to find anything other that deformable mesh generation for solid body motion of the boundaries. for this specific problem I need to be able to specify the location of the solid-fluid boundary after each time step. HOW DO I DO THAT? In the dynamic mesh dictonary it seems that only the velocity of the mesh (not the displacement) can be specified and the the velocity specified if for the entire boundary patch. Is that fair to say? Any link or help will be greatly appreciated. Thanks

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January 13, 2011, 18:38		#2
paka Senior Member Join Date: Mar 2009 Posts: 225 Rep Power: 18	If I can ask, why did you decide to use pimpleDyMFoam solve. Does it have full FSI capability?

January 14, 2011, 10:24		#3
gascortado Member Santiago Join Date: Dec 2009 Posts: 85 Rep Power: 16	I will implement my own FE code for the deformation of the plate.

January 14, 2011, 13:04		#4
sleepdeprivation New Member Alton Luder III Join Date: Oct 2009 Location: Michigan Posts: 22 Rep Power: 17	Check out http://www.openfoamworkshop.org/2009...ynamicMesh.pdf Specifically start looking at the dynamicFvMesh and dynamicMotionSolverFvMesh classes and their sub-classes. I've only done solid body motion functions myself, so I'm not really sure what's available for point motion.

January 14, 2011, 13:36		#5
elvis Senior Member Elvis Join Date: Mar 2009 Location: Sindelfingen, Germany Posts: 620 Blog Entries: 6 Rep Power: 24	Hi, have you visited FreeCASE http://www.aero.polimi.it/freecase/?...%2B_Code_Aster i did not understand how they implemented FSI (OpenFoam [CFD]<->Code Aster[FEM]), but i think it goes in the direction you want to use.

January 14, 2011, 14:19		#6
gascortado Member Santiago Join Date: Dec 2009 Posts: 85 Rep Power: 16	thanks for the link. I'll check it out.