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negetive pressure in CFD-ACE

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Old   November 17, 2006, 00:01
Default negetive pressure in CFD-ACE
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i am doing a problem on mixed flow compressor rotating a speed of 40000rpm,and pressur ration of 3,while giving iteratins i n stating only,"problem diverged negetinv pressure found in n cells"

can u help me about this how to resolve this, --structed mesh,with tip clearence,splitte blade, is this software can do this type of speed rotor

reply me urgent,pls say if u r doing this type of problem in this software,

thanking you
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