期刊
VACUUM
卷 201, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.vacuum.2022.111102
关键词
Centrifugal pump; Multiphase flow; Cavitation; Impeller structural optimization; CFD Simulation and experiment
资金
- National Natural Science Foundation of China [21978237]
- Natural Science Basic Research Program of Shaanxi [2021JLM-19, 2021JQ-814]
- Natural Science Basic Research Program of Shaanxi [2019JLP-03]
In this study, the behavior of liquid-vapor two-phase flow in centrifugal pumps under different conditions and impeller structural parameters was investigated using numerical and experimental methods. A cavitation multiphase unsteady model was proposed to simulate the flow field in the centrifugal pump, and an experimental platform was used to validate the simulation data. The study provides insights into structural optimization design of centrifugal pumps with good cavitation resistance.
Computational fluid dynamics (CFD) has been widely used to model the internal flow field of centrifugal pumps to analyze cavitation phenomena. However, accurate determination of cavitation in pumps remains a challenge. In this study, liquid-vapor two-phase flow in centrifugal pump at different conditions and impeller structural parameters were studied numerically and experimentally. Cavitation multiphase unsteady model was proposed to simulate the flow field in the centrifugal pump by CFD method, and an experimental platform was set up to obtain cavitation performance results. The simulation data were validated with experiment and good consistency was achieved. This study investigated the mass transfer and cavitation behavior of centrifugal pumps under various conditions and customizes a simulation process to obtain the optimal combination of impeller blade number, blade wrap angle, and blade installation angle, which was expected to provide helpful insights into the structural optimization design of centrifugal pumps with good cavitation resistance.
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