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 joanna February 21, 2006 22:36

specifying the flow direction in periodic boundary

Hello,everybody:

Have you solved such problem as specifying the flow direction in setting up the periodic boundary conditions? Now I meet the this problem . My flow is moving axisymmetrically around a disk, and the periodic bounary is the cross section through the axis. So the flow is flowing normally to the periodic bounary . It is neither in the x direction, nor y or z, you can say it's circumferential and radial simultaneously, or flowing spirally. Then how can I specify the flow direction, can you help me?

Best wishes!

 Kharicha February 22, 2006 02:01

Re: specifying the flow direction in periodic boun

You can impose a pressure gradient in the direction of the periodic flow..then the flow will choose the direction from the highest to the smallest pressure....

 joanna February 27, 2006 22:09

Re: specifying the flow direction in periodic boun