Dear Dudley J Benton

Thanks for your response. please correct me if i am wrong. you mean the best approach for estimation of pump efficiency is to implement experimental tests on it?

Reza Khazaee i don't know about your area of study, but in economics we have some standard models to study efficiency and productivity. you can have a look on it- ex DEA analysis and SFA analysis.

Pump efficiency is strongly dependent on design and operation. See if you can find an actual pump that might do what you need and then try to get curves from the manufacturer.

Dear Dudley J Benton

Thanks for your response. please correct me if i am wrong. you mean the best approach for estimation of pump efficiency is to implement experimental tests on it?

Dear Reza

one of the important technical point that we can benchmarking between pumps and like water jets is to calculate the NPSR parameter and plot the diagram of it.

In a hydraulic circuit, net positive suction head (NPSH) may refer to one of two quantities in the analysis of cavitation:

NPSH is particularly relevant inside centrifugal pumps and turbines, which are parts of a hydraulic system that are most vulnerable to cavitation. If cavitation occurs, the drag coefficient of the impeller vanes will increase drastically—possibly stopping flow altogether—and prolonged exposure will damage the impeller.

you can validate your NPSH diagram of your water jet with common water pumps.

best regards