Conformed mesh in SnappyHexMesh
Hi all,
I'm facing a problem with the mesh that I'm trying to generate. My purpose is to generate a conformed mesh in the fluid-structure interface. Thus, I want to know if there is a way to generate the fluid mesh with snappyHexMesh, specifying the faces on the boundary (extracted from the structural mesh). In this way the structural and fluid mesh will match in their interface. THanks |
I want to create similar mesh
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Thanks. |
As far as I know there is now way to do it in SHM. Thus I highly suggest you to move to other mesher, have a look to SALOME (open-source).
It allows you to create meshes with different elements, ranging from 1D to 3D. Dario |
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In case you have any question, please ask. |
2 Attachment(s)
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Attachment 60312 here black lines represent the fluid region. This is actually generated in another code and exported as stl in salome. Following is the stl file Attachment 60313 The above image may look like surface but it is actually a solid with very small width. In salome meshing I am using "partition" method for geometry. And for meshing I am using automatic 3D tetrahedralization. Is there any way I can generate coarse mesh for the region away from the fluid region? |
You can try to solve this generating sub-meshes in SALOME. To do this you'll need to generate groups on your geometry, for example you can group the edges of your domain. Then right click on your mesh and generate a sub-mesh on the groups generated. In the case of the edges you can assign 1-D hypotesis (this allows you to distribute a number of elements with constant or non-constant distribution, here you decide the number of elements).
You can even create sub-meshes on surfaces. With this method SALOME will first generate the sub-meshes and then the internal mesh in a way that it fulfill the sub-mesh hypotesis. |
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I tried to create submesh for the boundary faces and defined large grid size there. But it helped in reducing only very few number of cells. Actually it will be better if I can generate mostly hexahedral mesh. Is there any way to generate mixed mesh (consisting of hex,tetrahedral, prisms etc) in SALOME? |
Yes you can generate mixed mesh. As before you can group your domain in sub-domains and assign to each sub domain a different meshing solver, hexa , tetra etc.
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Hi,
I might misunderstand (possibly did not understand) your objective. Yet the lumped point boundary condition might be of help to your purpose? Lumped point Fluid Structure Interaction (FSI) |
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