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October 6, 2008, 00:23 |
CFD Analysis of pump
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#1 |
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hello can anyone help me in analysis of pump using CFD? I dont know how to use the effect of rotation in CFD. which mesh is better tetra or hexa? The software is ANSYS CFX.
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October 6, 2008, 00:24 |
Re: CFD Analysis of pump *NM*
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#2 |
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October 6, 2008, 04:36 |
Re: CFD Analysis of pump
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#3 |
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Hi,
Hexa Mesh is best and to give rotation give the impeller domain as rotating. |
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October 6, 2008, 07:42 |
Re: CFD Analysis of pump
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#4 |
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Dear Remith,
Always hexa mesh is better than the tetra mesh, please go through the tutorial file "Flow in an Axial Rotor/Stator" for defining rotation |
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October 6, 2008, 08:00 |
Re: CFD Analysis of pump
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#5 |
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Tetrahedron mesh is much more easy to build and for the first approaching, use this type of grid.
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October 6, 2008, 08:07 |
Re: CFD Analysis of pump
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#6 |
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i agree with Rogerio,
for your initial calculations you can go ahead with tetra mesh, but finally if you are looking for accuracy go with hexa mesh |
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October 6, 2008, 08:19 |
Re: CFD Analysis of pump
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#7 |
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Even so for a good accuracy, if you use tetra with a good number of elements, it is not to be wondered at you will find a good result. BUT, itīs good to make a study of the independence of the grid.
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October 6, 2008, 08:57 |
Re: CFD Analysis of pump
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#8 |
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if you are looking at drag or seperation then it does not make sense to run a case with tetra cell. even if you have good number of cells in your domain.
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