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calculating pressure ratio & efficiency of a centrifugal compressor

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Old   May 21, 2019, 09:59
Unhappy calculating pressure ratio & efficiency of a centrifugal compressor
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mohamadbaghdadi
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Hi

I've been modeled a centrifugal compressor with pressure ratio = 6.1 in Vista CCD but after running, in post processing i can't reach to pressure ratio 6.1!!

are there any special expressions for calculating a correct pressure ratio & efficiency in CFX ?
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Old   May 21, 2019, 18:33
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Here are some basics: https://www.cfd-online.com/Wiki/Ansy..._inaccurate.3F
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centrifugal compressor, outlet pressure, pressure ratio

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