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My DES result about BFS!

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Old   July 20, 2011, 07:44
Default My DES result about BFS!
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Aladdin
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Hi friends,
I have calculated the Back facing step using DES, my grid is multiblock grid and my time precision is 2nd order. I will give you some picture about the problem i met!
These pictures stand for the vorticity magnitude! We can see a very strange phenomenon in the block interface, there is a obviously grid shear phenonmennon, what`s the problem? Can anyone give me some suggestion?
By the way ,you can press the pictures for a big one and you can see the details!
1.jpg

2.jpg

3.jpg
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