Performance analysis of cavitating flow in centrifugal pumps using multiphase CFD

Richard B. Medvitz, Robert Francis Kunz, David A. Boger, Jules Washington V. Lindau, Adam M. Yocum, Laura Pauley

Research output: Chapter in Book/Report/Conference proceedingConference contribution

9 Scopus citations

Abstract

A multi-phase CFD method is used to analyze centrifugal pump performance under developed cavitating conditions. The differential model employed is the homogeneous two-phase Reynolds-Averaged-Navier-Stokes equations, wherein mixture momentum and volume continuity equations are solved along with vapor volume fraction continuity. Mass transfer modeling is provided for the phase change associated with sheet cavitation. Quasi-three-dimensional (Q3D) and fully-three-dimensional analyses are performed for two impeller configurations. Using Q3D analysis, steady and time-dependent analyses were performed across a wide range of flow coefficients and cavitation numbers. Characteristic performance trends associated with off-design flow and blade cavitation are observed. The rapid drop in head coefficient at low cavitation numbers (breakdown) is captured for all flow coefficients. Local flow field solution plots elucidate the principal physical mechanisms associated with the onset of breakdown. Results are also presented which illustrate the full three dimensional capability of the method.

Original languageEnglish (US)
Title of host publicationProceedings of the 2001 ASME Fluids Engineering Division Summer Meeting. Volume 1
Subtitle of host publicationForums
EditorsT.J. O Hern, T.J. O Hern
Pages445-453
Number of pages9
StatePublished - Dec 1 2003
Event2001 ASME Fluids Engineering Division Summer Meeting - New Orleans, LA, United States
Duration: May 29 2001Jun 1 2001

Publication series

NameProceedings of the ASME Fluids Engineering Division Summer Meeting
Volume1

Other

Other2001 ASME Fluids Engineering Division Summer Meeting
CountryUnited States
CityNew Orleans, LA
Period5/29/016/1/01

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

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    Medvitz, R. B., Kunz, R. F., Boger, D. A., Lindau, J. W. V., Yocum, A. M., & Pauley, L. (2003). Performance analysis of cavitating flow in centrifugal pumps using multiphase CFD. In T. J. O Hern, & T. J. O Hern (Eds.), Proceedings of the 2001 ASME Fluids Engineering Division Summer Meeting. Volume 1: Forums (pp. 445-453). (Proceedings of the ASME Fluids Engineering Division Summer Meeting; Vol. 1).