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Air-water two-phase flow experimental and numerical analysis in a low specific speed centrifugal pump

Communication avec acte
Author
SI, Qiaorui
462211 JiangSu University
BOIS, Gérard
531216 Laboratoire de Mécanique des Fluides de Lille - Kampé de Fériet [LMFL]
ZHANG, Keyu
462211 JiangSu University
YUAN, Jianping
462211 JiangSu University

URI
http://hdl.handle.net/10985/15475
DOI
10.29008/etc2017-054
Date
2017

Abstract

The paper presents experimental and numerical investigations performed on a single stage, single-suction, horizontal-orientated centrifugal pump in air-water two-phase non condensable flow conditions. Experimental test loop allows performing controlled values of air void fraction for different water flow rates for a several rotational speeds. Global pump heads and efficiencies are obtained for several inlet air void fraction values at different rotating speeds up to pump performance breakdown. Similarity laws under two-phase flow condition are investigated at three selected rotating speeds. Numerical calculations are also performed using URANS approach including k-e turbulence and inhomogeneous two-phase models for nominal rotational speed, the results of which are used to understand some specific experimental results.

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