Houlin Liu, Yanhong Mao, Yong Wang, Xiaolin Wang, Linglin Jiang, Ming Li
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Energy characteristic of cavitation in a centrifugal pump based on entropy generation analysis
In this paper, the entropy production method with computational fluid dynamics technology is employed to study the effect of cavitation on the energy characteristics of the centrifugal pump. The modified cavitation model used in the numerical simulation is also verified by visualization experiments. The results show that the energy loss of the pump can be reflected by the entropy production and is the largest in the impeller. Moreover, the cavitation degree could greatly influence the energy loss of the pump. With the decrease in cavitation number, the vortexes and vapor distribution area increase in the impeller, leading to the increase in the total entropy production. The high entropy production region in the blade shifts to the outlet as the cavitation becomes serious.
期刊介绍:
The Journal of the Brazilian Society of Mechanical Sciences and Engineering publishes manuscripts on research, development and design related to science and technology in Mechanical Engineering. It is an interdisciplinary journal with interfaces to other branches of Engineering, as well as with Physics and Applied Mathematics. The Journal accepts manuscripts in four different formats: Full Length Articles, Review Articles, Book Reviews and Letters to the Editor.
Interfaces with other branches of engineering, along with physics, applied mathematics and more
Presents manuscripts on research, development and design related to science and technology in mechanical engineering.