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design of straight blade impellers

thread407-1749

design of straight blade impellers

design of straight blade impellers

(OP)
I'm trying to find the governing equations (flow, pressure, etc.) for straight blade impellers (given dimensional information). Also, are there equations for the effect of viscosity on the pumping performance?

RE: design of straight blade impellers

The theoretical equations for straight blade impellers are no different than standard curved equations, except for the value of the blade angle is pi/2 instead of whatever.

Yes, there are viscosity correction factors but these are based on real pumps - not theoretical ones.  I'm not too terribly confident that they will mean that much when compared with a theoretical pump.

Nevertheless, you can find such correction factors in many pump books and literature.

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