Experimental and numerical study on cavitation performances of a turbopump with and without an inducer

The cavitation performances and its internal flows in a centrifugal turbopump with and without a three-bladed axial inducer have been studied both experimentally and numerically. A 3D steady numerical model has been applied to simulate the cavitating flow from the inlet to the outlet ducts of the tu...

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Bibliographic Details
Published in:Proceedings of the Institution of Mechanical Engineers. Part G, Journal of aerospace engineering Journal of aerospace engineering, 2022-05, Vol.236 (6), p.1098-1111
Main Authors: Fu, Yanxia, Xie, Jiangfeng, Shen, Yang, Pace, Giovanni, Valentini, Dario, Pasini, Angelo, D’Agostino, Luca
Format: Article
Language:English
Subjects:
Cavitation
Cold water
Inlet pressure
Internal flow
Numerical models
Three dimensional models
Turbine pumps
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Summary:The cavitation performances and its internal flows in a centrifugal turbopump with and without a three-bladed axial inducer have been studied both experimentally and numerically. A 3D steady numerical model has been applied to simulate the cavitating flow from the inlet to the outlet ducts of the turbopump with and without an inducer by using ANSYS CFX code. In the present work, to clarify this relationship, we conducted experiments in both cold water (T = 20°C) and hot water (T = 80°C) with a focus on the development of vapor volume fraction and head degradation by gradually reducing the inlet pressure from atmospheric conditions to the minimum allowable value at a constant rate of about 3 mbar/s. The measured and predicted cavitation performances of the turbopump with and without an inducer have been compared under different operating conditions and the temperature of the operating fluid.
ISSN:0954-4100
2041-3025
DOI:10.1177/09544100211027045