Effect of the Submerged Vortex Cavitation Occurred in Pump Suction Intake on Hydraulic Forces of Mixed Flow Pump Impeller

Nagahara, Takahide and Sato, Tadashi and Okamura, Tomoyoshi (2001) Effect of the Submerged Vortex Cavitation Occurred in Pump Suction Intake on Hydraulic Forces of Mixed Flow Pump Impeller. In: CAV 2001: Fourth International Symposium on Cavitation, June 20-23, 2001, California Institute of Technology, Pasadena, CA USA.

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Abstract

The effect of submerged vortices on the hydraulic forces of a mixed flow pump impeller was studied using a model pump with an intake sump. The experiments comprise observation of submerged vortices reaching the impeller with a high-speed video camera and measurement of the velocity distribution around the submerged vortex by PTV (particle tracking velocimetry) to obtain the strength of the vortex. Measurement results are compared with CFD (computational fluid dynamics) calculation to evaluate their accuracy. Hydraulic forces on the model pump when the submerged vortex reached the pump impeller was measured with load cells. The relationship between the strength of the submerged vortex and the effect of the vortex on the fluctuation of the hydraulic forces are described

EPrint Type:	Conference or Workshop Item (Lecture)
Uncontrolled Keywords:	pump,suction intake sump,vortex cavitation
Subjects:	All Records Session B8 Turbomachinery 2
ID Code:	358
Deposited By:	takahide nagahara
Deposited On:	29 May 2001
Record Number:	CAV2001:sessionB8.006
Official Persistent URL:	http://resolver.caltech.edu/CAV2001:sessionB8.006
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