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MRF Method For Ceiling Fan Analysis

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Old   December 6, 2017, 10:50
Question MRF Method For Ceiling Fan Analysis
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Berkhan Bayraktar
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Hello all,

I am trying to analize the flow created by a ceiling fan using MRF method. I have two different fluid zones. First zone is cylinder which includes the fan, the other is the room itself. I'm confused about cell zone and boundary conditions. Rotating cylinder (first zone) has a frame motion as a cell zone condition. The fan is selected as a moving wall with 0 rad/sec relative to adjacent cell zone. (Both are rotating with 180 rpm)

Are these boundary conditions correct? I don't think that they should rotate together, however, the method seems to work with those BC.

If this is correct can I read the moment on the fan directly from the reports? If not, how can I read it?

In the image vertical velocities are plotted and there are also hollow cylinder to stabilize the flow.

Thank you in advance.
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