Transient behavior of a cavitating centrifugal pump at rapid change in operating condition (1st report, transient phenomena at opening/closure of discharge valve)

摘要

A series of studies on dynamic characteristics of noncavitating centrifugal pump were extended to cavitating case. Experimental study was carried out on transient behavior of cavitating centrifu- gal pump at the sudden opening/closure of discharge valve. Cavitation behavior was visualized during transient period of centrifugal pump by using high speed video camera. And instantaneous pressure and flow rate were measured at suction and discharge ports with rotational speed during the transient period.