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April 4, 2009, 05:24 |
Diffuser inlet boundary condition problem
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#1 |
Senior Member
Attesz
Join Date: Mar 2009
Location: Munich
Posts: 368
Rep Power: 17 |
Hi all,
I've got a radial compressor wheel, and after that a diffuser. I want to simulate only the diffuser. I've calculated the inlet velocity components numerically. It has a radial component and an axial component, but the axial is normal to every point on the inlet. If I choose "cartesian velocity component", i set the components in the global coordinate system. In "Cylindrycal vel. comp" the problem is the same. If I choose the "Normal speed" option, i can set the "axial" component, but the radial(which coming from the rotation of the compressor wheel) not. So I have to set an "axial" component, which is normal to inlet in every points, and a radial component, which is perpendicular to these axial components. Thanks Attesz |
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boundary conditions, compressor, diffuser, inlet, velocity components |
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