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Energies 2018, 11(11), 3048; https://doi.org/10.3390/en11113048

Investigation on the Handling Ability of Centrifugal Pumps under Air–Water Two-Phase Inflow: Model and Experimental Validation

1
National Research Center of Pumps, Jiangsu University, Zhenjiang 212013, China
2
LMFL, FRE CNRS 3723, ENSAM, 8 boulevard Louis XIV, 59046 Lille CEDEX, France
3
Key Laboratory of Fluid and Power Machinery, Xi Hua University, Chengdu 610039, China
*
Author to whom correspondence should be addressed.
Received: 10 October 2018 / Revised: 31 October 2018 / Accepted: 2 November 2018 / Published: 6 November 2018
(This article belongs to the Special Issue Fluid Flow and Heat Transfer)
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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 measurements are performed in a centrifugal pump using pressure sensor devices in order to measure the wall static pressures at the inlet and outlet pump sections for different flow rates and rotational speeds combined with several air void fraction (a) values. Two different approaches are used in order to predict the pump performance degradations and perform comparisons with experiments for two-phase flow conditions: a one-dimensional two-phase bubbly flow model, and a full “Three-Dimensional Unsteady Reynolds Average Navier–Stokes” (3D-URANS) simulation using a modified k-epsilon turbulence model combined with the Euler–Euler inhomogeneous two-phase flow description. The overall and local flow features are presented and analyzed. Limitations concerning both approaches are pointed out according to some flow physical assumptions and measurement accuracies. Some additional suggestions are proposed in order to improve two-phase flow pump suction capabilities. View Full-Text
Keywords: two-phase flow; pump performance; computational fluid dynamics; centrifugal pump; flow behavior two-phase flow; pump performance; computational fluid dynamics; centrifugal pump; flow behavior
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Si, Q.; Bois, G.; Jiang, Q.; He, W.; Ali, A.; Yuan, S. Investigation on the Handling Ability of Centrifugal Pumps under Air–Water Two-Phase Inflow: Model and Experimental Validation. Energies 2018, 11, 3048.

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