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How to set the boundary by hand?

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Old   April 6, 2009, 23:21
Default How to set the boundary by hand?
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Shui Pei
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Now I have set a cyclic boundary to the flow field, but I need to set a open boundary for my user defined scalar, what should I do? Now I just loop the mesh and set the two layer most close to the outlet equal to each other to achieve the zero gradient( time steady) ,is it OK? Thanks.
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