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Influence of a Stability Control Device on the Performance of a Cavitating Water Pump Inducer

[+] Author Affiliations
R. Lundgreen, D. Maynes, S. Gorrell

Brigham Young University, Provo, UT

K. Oliphant

Concepts NREC, White River Junction, VT

Paper No. FEDSM2014-21138, pp. V002T06A002; 10 pages
doi:10.1115/FEDSM2014-21138
From:
  • ASME 2014 4th Joint US-European Fluids Engineering Division Summer Meeting collocated with the ASME 2014 12th International Conference on Nanochannels, Microchannels, and Minichannels
  • Volume 2, Fora: Cavitation and Multiphase Flow; Fluid Measurements and Instrumentation; Microfluidics; Multiphase Flows: Work in Progress; Fluid-Particle Interactions in Turbulence
  • Chicago, Illinois, USA, August 3–7, 2014
  • Conference Sponsors: Fluids Engineering Division
  • ISBN: 978-0-7918-4626-1
  • Copyright © 2014 by ASME

abstract

An inducer performance has been explored with and without the implementation of a stability control device. Multiphase, time-accurate computational fluid dynamic simulations have been conducted at the design flow coefficient and at two low off-design flow coefficients. At the design flow coefficient, the inducer performance was similar with and without the stability control device. At low flow coefficients, the inducer without the stability control device exhibited significant cavitation instabilities, which led to high rotordynamic forces on the inducer blades. When the stability control device was incorporated into the inducer design, nearly all of the cavitation instabilities were suppressed at low flow coefficients and the rotordynamic forces were reduced by more than an order of magnitude. Stable operation at flow coefficients far below the design value leads to a significant increase in the suction performance of the inducer, allowing pumps to operate at lower inlet pressures.

Copyright © 2014 by ASME
Topics: Stability , Pumps , Water

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