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-   -   Pressure fluctuation in whole external-flow computational domain (http://www.cfd-online.com/Forums/openfoam/84324-pressure-fluctuation-whole-external-flow-computational-domain.html)

lordvon January 26, 2011 09:47

Pressure fluctuation in whole external-flow computational domain
 
I have a .3 m diameter rotor (cross flow fan) in an 18 m square computational domain. It is a 2D simulation and the rotor is turning at 5000 rpm and the freestream is at 6.8 m/s, where the top and bottom have the slip bc.

I am seeing the pressure fluctuate slightly in the whole computational domain. Is this indicative of too small a computational domain?


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