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The characteristics of stable and unstable flow.
For stable head-flow characteristic the differential head - h - progressively falls with increasing flow rate - q.
For unstable head-flow characteristic the differential head - h - rises to a maximum and then progressively falls with increasing flow rate - q.
An unstable pump may start to oscillate between the two possible combinations of head-flow. The flow rate will modulate and the pipeline vibrate.
It is recommended that centrifugal pumps are designed and operated under stable conditions.
Piping systems and pumps - centrifugal pumps, displacement pumps - cavitation, viscosity, head and pressure, power consumption and more.
Securing a system and achieve equal wear by alternating pumps in parallel.
International centrifugal pump design and dimension standards.
An introduction to Centrifugal Pumps.
Minimum continuous flow to prevent flashing in centrifugal pumps.
Centrifugal pumps vs. positive displacement pumps.
Converting head (ft or m) to pressure (psi or bar, kg/cm2) and vice versa.
Characterizing of impeller types in pumps in a unique and coherent manner.
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