Cavitation in transiently operating centrifugal pumps
Book
·
OSTI ID:100903
- Naval Undersea Warfare Center Division, Newport, RI (United States)
The effect of transient operation on a centrifugal pump`s cavitation performance was investigated experimentally in the Naval Undersea Warfare Center`s Impeller Test Facility. For low facility pressures where cavitation occurred, its inception and desinence during the transient were determined by acoustic and visualization methods whose results agreed closely with predicted values based on quasi-steady analysis. The minimum facility pressure for cavitation-free operation also correlated well with quasi-steady predictions. Impeller suction performance continuously degraded (i.e., reduced suction pressure) as facility pressure was lowered from the minimum non-cavitating pressure and as the severity of cavitation increased. This degradation was actually a redistribution of pressure across the impeller since the total head rise was unaffected. The appearance of suction pressure degradation can be used as an alternate means of determining the minimum facility pressure for cavitation-free operation.
- OSTI ID:
- 100903
- Report Number(s):
- CONF-940659--; ISBN 0-7918-1373-8
- Country of Publication:
- United States
- Language:
- English
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