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Old   January 5, 2005, 07:25
Default centrifugal fan
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giannivr
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Dear all, I would know if one of you have ever modeled a centrifugal fan with Fluent, like this example: http://www.fluent.com/solutions/auto...ifugal_fan.pdf

The fan that I'm studying was tested in laboratory and I'm trying to validate the CFD model (like in the example).

I'm using the same approch: steady-state multiple reference frames, standard k-e for turbolence, incompressible working fluid (air).... But my results are not in good agreement with test data, especially for low flow-rate.

If anyone have experience in similar CFD model, please contact me.

Gianni

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Old   January 6, 2005, 02:57
Default Re: centrifugal fan
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ales
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I suppose that your results looks good. Flow at fans (or pumps) at low flow rates are usually unsteady and non symmetrical. For better results at low flow rates you should compute your task by unsteady flow simulation and use slidind mesh approach.

Good luck. ales.
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Old   January 10, 2005, 05:07
Default Re: centrifugal fan
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giannivr
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Hi Ales, thank you for your reply. I've also read in some studies that for low flow rates it should be better to use the unsteady-sliding mesh approch, but if you've read the article (the link in my previous message) Fluent Inc. used a steady-MRF approch with good results also for low flow rate. Have you ever modeled a similar case?
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