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Study on Energy Conversion Characteristics in Volute of Pump as Turbine

Senchun Miao1,2,*, Hongbiao Zhang1, Fengxia Shi1, Xiaohui Wang1, Xijin Ma1

1 School of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou, China
2 Jiangsu Shuangda Pump Valve Group Co., Ltd., Jingjiang, China

* Corresponding Author: Senchun Miao. Email: email

Fluid Dynamics & Materials Processing 2021, 17(1), 201-214.


A volute is a curved funnel with cross-sectional area increasing towards the discharge port. The volute of a centrifugal pump is the casing hosting the fluid being pumped by the impeller. In Pump-as-turbine devices (PAT), vice versa the volute plays the role of energy conversion element. In the present analysis, this process is analyzed using CFD. The results show that in the contraction section of volute the conversion between dynamic pressure energy and static pressure energy essentially depends on the reduction of flow area, while in the spiral section, frictional losses also play a significant role. From the throat to the end of the volute, the flow decreases in a wave-like manner.


Cite This Article

Miao, S., Zhang, H., Shi, F., Wang, X., Ma, X. (2021). Study on Energy Conversion Characteristics in Volute of Pump as Turbine. FDMP-Fluid Dynamics & Materials Processing, 17(1), 201–214.

cc This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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