Abstract
Dynamic model of centrifugal pump with induction motor on the base of Suter curves is described. The model is implemented in surge model of PASS/Hydrosystem software. The ways to provide consistency between transient and steady state flow models are proposed. A rule of thumb is described to preliminarily estimate if pump start-up and shut down can produce significant pressure picks that require detailed simulation.
Highlights
IntroductionCorrect simulating of centrifugal pump dynamic behaviour during transient flow (and especially waterhammer) in pipeline transporting liquids is very important
Correct simulating of centrifugal pump dynamic behaviour during transient flow in pipeline transporting liquids is very important
This article presents dynamic model of centrifugal pumps with induced motor implemented in surge module of PASS/Hydrosystem software
Summary
Correct simulating of centrifugal pump dynamic behaviour during transient flow (and especially waterhammer) in pipeline transporting liquids is very important. Two other cases are caused by changes in the other elements of piping system, but pump transient behavior is important. These cases include the transient process with operating pump (when its duty point changes), and a rare case of transient flow through not operating, but hydraulically not isolated pump (with flow through it). Transient processes related to active automatic pump control, for example pumps with variable frequency drive, are scheduled to be implemented in the nearest future
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