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Complex boundary conditions??

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Old   April 21, 2000, 11:19
Default Complex boundary conditions??
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Moussa Diarra
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Hi Can anybody help me? i'am trying to simulate Air Flow between two independant rotating disks and i have a problem to define the boundary conditions (there is no inlet/outlet boundaries).The only condition i know is The static pressure (atmosphere 1.013e5 Pa) is present everywhere before the rotor disk starts. All ideas are welcome.

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Old   April 27, 2000, 08:55
Default Re: Complex boundary conditions??
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tobbe
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If the disks are perfectly circular and symmetric the easiest thing is to put a cylindrical coordinate system in the center of each disk and then use a moving wall boundary at each disk utilizing the coordinate systems just created. The walls will then be seen as rotating even if the actual mesh is fixed.
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