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Periodic and sym. BCs

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Old   July 16, 2007, 12:34
Default Periodic and sym. BCs
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selim
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Hi,

What is the difference between periodic and symmetric BC types.

How periodic BC can be applied in CFX 11?

Thanks, Selim
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Old   July 16, 2007, 12:44
Default Re: Periodic and sym. BCs
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Gert-Jan
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Periodic BC allow the flow to leave the domain through one periodic BC and enter the domain through the other. Symmetry BC force the fluid to flow parallel to the symmetry plane.

You can create periodic faces in CFX-Pre using the "boundary-interface-menu". Use the periodic-periodic option / GGI-connection.

In the ideal situation, you already know in the meshing stage that you need periodic boundaries. Then you can enforce the mesher to create identical meshes on the periodic face. In Pre this allows to use the periodic-periodic / automatic option. This improves accuracy.

Gert-Jan

www.bunova.nl
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Old   July 16, 2007, 13:01
Default Re: Periodic and sym. BCs
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selim
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Thanks a lot,

Selim
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