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2017-10-02_162339.png (9,933 bytes) |
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In what way is this diagram incorrect? It looks consistent with the definition of the blocks in blockMesh and following it produces correct meshes. If you find the diagram misleading in anyway we could simply remove it. |
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@henry In the diagram, it seems to we want build a block hex (0 1 2 3 4 5 6 7), and according to user guide 5.3, there is a local coordinate system (x1, x2, x3) and the x1 direction is from vertex 0 to vertex 1, which is to the right in the diagram, and x2 direction is from vertex 1 to vertex 2, which is towards us in the diagram, so x3 direction should be downward if we want a right-handed coordinate system, but in the diagram, the x3 direction (from vertex 0 to vertex 4) is upward. PS: please correct me if I mistake some concepts. |
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It is not clear what the problem is, can you provide a single block mesh generated following the blockMesh diagram which is incorrect? What exactly do you want done to the diagram? Can you provide a patch which include the changes you want and a demonstration mesh which shows they are correct? |
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Please reopen this report when you can provide an example mesh which shows that the block description is incorrect and a patch which writes the corrected diagram. |
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I will try to make my question clear. With the diagram shown by blockMesh -help, I will add this to blockMeshDict: vertices ( (0 0 0) // 0 (0 1 0) // 1 (1 1 0) // 2 (1 0 0) // 3 (0 0 1) // 4 (0 1 1) // 5 (1 1 1) // 6 (1 0 1) // 7 ); blocks ( hex (0 1 2 3 4 5 6 7) (20 20 20) simpleGrading (1 1 1) ); which does not work with blockMesh in OpenFOAM 5.0. I guess the diagram tries to tell us to add this to blockMeshDict: vertices ( (0 0 0) // 0 (1 0 0) // 1 (1 1 0) // 2 (0 1 0) // 3 (0 0 1) // 4 (1 0 1) // 5 (1 1 1) // 6 (0 1 1) // 7 ); blocks ( hex (0 1 2 3 4 5 6 7) (20 20 20) simpleGrading (1 1 1) ); which coresponses to a diagram like this (in my opinion): 4 ---- 7 f3 |\ |\ f5 | | 5 ---- 6 \ | 0 |--- 3 | \ | \| \| f4 f2 1 ---- 2 f0 ----- f1 (please note the positions of vertex 1, 3, 5, 7) and in blockMesh -help, the diagram is: 4 ---- 5 f3 |\ |\ f5 | | 7 ---- 6 \ | 0 |--- 1 | \ | \| \| f4 f2 3 ---- 2 f0 ----- f1 |
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blockMesh.png (1,719 bytes) |
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prefered.png (1,757 bytes) |
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Sorry for the ugly looks of the diagrams. I submit two pitures of the diagrams: prefered.png corresponds the one I think it should be, and blockMesh.png corresponds to blockMesh -help |
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Resolved in OpenFOAM-5.x by commit 2d5af005e56a76eb2f7b6ad1b5bd2a12035705fc Resolved in OpenFOAM-dev by commit 8f5a3875f6e6e693227d613506a08ae2b2fb51c3 |
- Anonymous
