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Flow Calculations for Impellers

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CLNPumps

Industrial
Joined
Aug 25, 2004
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2
Location
DE
What is the correct formula for calulating fluid flow rates for a given impeller based on dimensions and RPM?
Thanks for your help!
 
To my knowledge, at least one configuration of an impeller diameter at one speed would have to be measured empirically (the manufacturer will have this info, probably on-line, and definitely free for the asking). Then, you can use similarity laws to determine theoretical flows, TDH, NPSH, BHP for other sizes.

The only formula I am aware of a formula which would give you this is one which involves specific speed (n-sub-s). But this again must come from the manufacturer.
 
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