A numerical investigation on energy characteristics of centrifugal pump for cavitation flow using entropy production theory

被引：55
作者：
Wang, Xiaolin [1 ]
Wang, Yong [1 ,2 ]
Liu, Houlin [1 ]
Xiao, Yadong [3 ]
Jiang, Linglin [1 ]
Li, Ming [1 ]
机构：
[1] Jiangsu Univ, Res Ctr Fluid Machinery Engn & Technol, Zhenjiang 212013, Jiangsu, Peoples R China
[2] Suzhou Inst Ind Technol, Suzhou 215100, Jiangsu, Peoples R China
[3] ROS Offshore Engn Shanghai Co Ltd, Shanghai 200000, Peoples R China
来源：
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 2023年 / 201卷
基金：
中国国家自然科学基金;
关键词：
Centrifugal pump; Entropy production; Irreversible energy loss; Cavitation flow; Vortex; AVERAGED NAVIER-STOKES; LARGE-EDDY SIMULATION; TURBULENCE MODEL; SPECIAL EMPHASIS; PROPELLER; IMPELLER;
D O I：
10.1016/j.ijheatmasstransfer.2022.123591
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The objective of this paper is to investigate the characteristics of irreversible energy loss caused by cavi-tation flow in centrifugal pump. The entropy production theory with computational fluid dynamics (CFD) is employed to analyze the relationship between flow field details of cavitation flow and irreversible flow loss. The accuracy of the simulations is ascertained by comparing the cavitation performance curve and cavity distribution of the pump obtained numerically and experimentally. The predicted results show that the entropy production is consistent with the energy loss, and the energy loss in the impeller is large. Further, the distribution of entropy production and flow details in the impeller are analyzed. It is found that the serious cavitation flow changes the flow field structure and the distribution area of maximum entropy production, the turbulence velocity fluctuation is the main reason for the increase of the total entropy production, and the high-speed vortex has great influence on the irreversible flow loss. (c) 2022 Elsevier Ltd. All rights reserved.
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页数：13
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