[blockMesh] Multi-resolution Mesh

wulong · October 28, 2010, 20:38

Is it possible to create the multi-resolution 2D mesh?
For example,
In region A (0,1)X(0,1), the resolution is 32X32; in region B (1,2)X(0,1), the resolution is 128X128; region A and B is connected by the face at plane X=1.

akidess · October 29, 2010, 04:24

Yes, it's fairly simple too. All you have to do is define a block mesh with two blocks (using 12 points).

wulong · October 29, 2010, 06:11

I use the two blocks with 12 points, but it doesn't work. The OpenFoam complains "The edge is not consist at the X=1" .
So, I use two blocks with 16 points and 4 pair of points have the same coordinate. The OpenFoam does't complain, but the two blocks are not connected.
I don't know how to do.

akidess · October 29, 2010, 07:06

You need 12 points in the vertices list. The order of the vertices should be consistent to what you find for a hexahedron on U-127 in the user guide. Then you can define to blocks

hex (0 1 2 3 4 5 6 7) (32 32 1) simpleGrading (1 1 1)
hex (1 8 9 2 5 10 11 6) (128 128 1) simpleGrading (1 1 1)

October 28, 2010, 20:38	Multi-resolution Mesh	#1
wulong New Member Join Date: Oct 2010 Posts: 2 Rep Power: 0	Is it possible to create the multi-resolution 2D mesh? For example, In region A (0,1)X(0,1), the resolution is 32X32; in region B (1,2)X(0,1), the resolution is 128X128; region A and B is connected by the face at plane X=1.

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October 29, 2010, 04:24		#2
akidess Senior Member Anton Kidess Join Date: May 2009 Location: Germany Posts: 1,377 Rep Power: 29	Yes, it's fairly simple too. All you have to do is define a block mesh with two blocks (using 12 points).

October 29, 2010, 06:11		#3
wulong New Member Join Date: Oct 2010 Posts: 2 Rep Power: 0	I use the two blocks with 12 points, but it doesn't work. The OpenFoam complains "The edge is not consist at the X=1" . So, I use two blocks with 16 points and 4 pair of points have the same coordinate. The OpenFoam does't complain, but the two blocks are not connected. I don't know how to do.

October 29, 2010, 07:06		#4
akidess Senior Member Anton Kidess Join Date: May 2009 Location: Germany Posts: 1,377 Rep Power: 29	You need 12 points in the vertices list. The order of the vertices should be consistent to what you find for a hexahedron on U-127 in the user guide. Then you can define to blocks hex (0 1 2 3 4 5 6 7) (32 32 1) simpleGrading (1 1 1) hex (1 8 9 2 5 10 11 6) (128 128 1) simpleGrading (1 1 1)