Performance Analysis of Cavitating Flow in Centrifugal Pumps Using Multiphase CFD-Reference-Cited by-同舟云学术

Performance Analysis of Cavitating Flow in Centrifugal Pumps Using Multiphase CFD

Published:2002-05-28 Issue:2 Volume:124 Page:377-383
ISSN:0098-2202
Container-title:Journal of Fluids Engineering
language:en
Short-container-title:

Author:

Medvitz Richard B.¹,Kunz Robert F.¹,Boger David A.¹,Lindau Jules W.¹,Yocum Adam M.¹,Pauley Laura L.²

Affiliation:

1. Applied Research Laboratory, The Pennsylvania State University, University Park, PA 16804

2. Department of Mechanical Engineering, The Pennsylvania State University, University Park, PA 16802

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. Using quasi-3D (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.

Publisher

ASME International

Subject

Mechanical Engineering

Link

http://asmedigitalcollection.asme.org/fluidsengineering/article-pdf/124/2/377/5678692/377_1.pdf

Reference14 articles.

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3. Chen, Y., Heister, S.D., 1994, “Two-Phase Modeling of Cavitated Flows,” ASME FED-Vol. 190, pp.299–307.

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