blockMesh and surface mesh

doubtsincfd · June 30, 2011, 05:30

I have a surface mesh, or rather grid points on a curved surface. Now I want to build a grid in blockMesh at the same exact locations I have. Is there any way to specify each and every grid point I want on a surface and tell blockMesh to construct a grid based on those points?

Its like following the bottom to top approach. I have surface mesh and I need to construct a volume mesh in blockMesh from the available surface mesh.

AlanR · July 3, 2011, 02:26

I think you need to use snappyHexMesh. Basically, you build a cube in blockMesh around your surface with the surface slicing through the cube. Then, you use snappyHexMesh to generate a mesh that conforms to the surface and meshes the volume from your surface to the top of the cube. The motorBike tutorial is a good model to follow. I don't think you can mesh an irregular surface in blockMesh, but snappy does it quite well.

Alan

June 30, 2011, 05:30	blockMesh and surface mesh	#1
doubtsincfd Senior Member Join Date: Nov 2009 Location: Michigan Posts: 135 Rep Power: 17	I have a surface mesh, or rather grid points on a curved surface. Now I want to build a grid in blockMesh at the same exact locations I have. Is there any way to specify each and every grid point I want on a surface and tell blockMesh to construct a grid based on those points? Its like following the bottom to top approach. I have surface mesh and I need to construct a volume mesh in blockMesh from the available surface mesh.

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July 3, 2011, 02:26		#2
AlanR Member Alan Russell Join Date: Aug 2009 Location: Boise, Idaho USA Posts: 61 Rep Power: 17	I think you need to use snappyHexMesh. Basically, you build a cube in blockMesh around your surface with the surface slicing through the cube. Then, you use snappyHexMesh to generate a mesh that conforms to the surface and meshes the volume from your surface to the top of the cube. The motorBike tutorial is a good model to follow. I don't think you can mesh an irregular surface in blockMesh, but snappy does it quite well. Alan