The effect of inlet swirl on the rotordynamic shroud forces in a centrifugal pump
- California Inst. of Tech., Pasadena (United States)
The role played by fluid forces in determining the rotordynamic stability of a centrifugal pump is gaining increasing attention. The present research investigates the contributions to the rotordynamic forces from the discharge-to-suction leakage flows between the front shroud of the rotating impeller and the stationary pump casing. In particular, the dependency of the rotordynamic characteristics of leakage flows on the swirl at the inlet to the leakage path was examined. An inlet guide vane was designed for the experiment so that swirl could be introduced at the leakage flow inlet. The data demonstrate substantial rotordynamic effects and a destabilizing tangential force for small positive whirl ratios; this force decreased with increasing flow rate. The effect of swirl on the rotordynamic forces was found to be destabilizing.
- OSTI ID:
- 6504577
- Journal Information:
- Journal of Engineering for Gas Turbines and Power; (United States), Journal Name: Journal of Engineering for Gas Turbines and Power; (United States) Vol. 115:2; ISSN JETPEZ; ISSN 0742-4795
- Country of Publication:
- United States
- Language:
- English
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AVAILABILITY
CENTRIFUGAL PUMPS
EQUIPMENT
MACHINE PARTS
MACHINERY
MECHANICAL SHAFTS
PARAMETRIC ANALYSIS
PERFORMANCE
PUMPS
ROTORS
SHAFTS
STABILITY
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TURBOMACHINERY