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Face normal vector not following right hand rule?

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Old   October 15, 2024, 15:48
Default Face normal vector not following right hand rule?
  #1
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Dongyue Li
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Location: Beijing, China
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Hi there, I use blockMesh to generate a mesh with only one cell. The points are:

PHP Code:
8((0 0 0) (1 0 0) (0 1 0) (1 1 0) (0 0 1) (1 0 1) (0 1 1) (1 1 1)) 
These points are like (eights vertices of a cube):

--6 7
2 3
--4 5
0 1

Faces are:

PHP Code:
6
(
4(2 6 7 3)
4(0 4 6 2)
4(1 3 7 5)
4(0 1 5 4)
4(0 2 3 1)
4(4 5 7 6)

One can easily see all these boundary faces point inward not outward, by the right hand rule. Am I missing anything? ..

Thanks.
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Old   October 16, 2024, 02:13
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  #2
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Dongyue Li
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I got it, the point sequence is wrong.

--6 7
2 3
--4 5
0 1

should be

--2 3
6 7
--0 1
4 5
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By far the largest Chinese CFD-based forum: http://www.cfd-china.com/category/6/openfoam
We provide lots of clusters to Chinese customers, and we are considering to do business overseas: http://dyfluid.com/DMCmodel.html
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