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Pressure drop through centrifugal compressor

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Old   August 2, 2016, 04:59
Smile Pressure drop through centrifugal compressor
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Brett
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Hi all,

I'm trying to model an existing compressor which has a total pressure ratio of 1.8 and a mass flow of 0.7kg/s at 41000rpm.

Essentially I keep getting pressure drops through the passage. Im running my mass flow as 'per machine'.

I've read that a good BC template to set is Pressure inlet (set at 0 as Pref is atmospheric) and mass flow outlet. My hub and shroud are no slip wall and counter rotating wall respectively.

Any thoughts?

Brett
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boundary condition, cfx 17.1, compressor diffuser cfx, turbo machinery

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