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boundary conditions : water vortex flow through a cylinder

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Old   July 16, 2013, 10:29
Lightbulb boundary conditions : water vortex flow through a cylinder
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I'm new to Ansys and I'm trying to simulate flow of water through a cylindrical basin with a large inlet hole and a small exit hole as shown in the figure(see the link). How should I go about defining boundary conditions for the problem and what models should I use in Ansys Fluent? Please help!! (How should I approach the problem?)

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