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Radial Flow pumps only - Affinity laws?

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Bygeorge

Mechanical
Joined
Mar 4, 2004
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5
Location
AU
The affinity laws for speed change work for all rotodynamic pumps (radial, axial and mixed flow impellers) but for impeller diameter change the laws only apply for radial flow impellers - can anyone tell me why this is the case?
 
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