Pressure fluctuation in whole external-flow computational domain -- CFD Online Discussion Forums

January 26, 2011, 08:47	Pressure fluctuation in whole external-flow computational domain	#1
lordvon Senior Member Robert Join Date: Sep 2010 Posts: 158 Rep Power: 15	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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