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Citation:
　Xingyu Jia,Qixuan Sun,Xuechu Zhao,et al.Method of Bionic Fish Scale Structure on Pressure Fluctuation Suppression of a Centrifugal Pump[J].Journal of Marine Science and Application,2025,(5):1037-1048.[doi:10.1007/s11804-025-00671-y]
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Method of Bionic Fish Scale Structure on Pressure Fluctuation Suppression of a Centrifugal Pump

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Title:
Method of Bionic Fish Scale Structure on Pressure Fluctuation Suppression of a Centrifugal Pump
Author(s):
Xingyu Jia1;  Qixuan Sun1;  Xuechu Zhao2;  Bing Liu3;  Lei Tan1
Affilations:
Author(s):
Xingyu Jia1;  Qixuan Sun1;  Xuechu Zhao2;  Bing Liu3;  Lei Tan1
1. Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, China;
2. Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China;
3. College of Mechanical and Electronic Engineering, Shandong University of Science and Technology, Qingdao 266000, China
Keywords:
Pressure fluctuation|Centrifugal pump|Fish scale|Bionic structure|Blade passing frequency
分类号:
-
DOI:
10.1007/s11804-025-00671-y
Abstract:
Centrifugal pumps are extensively employed in ocean engineering, such as ship power systems, water transportation, and mineral exploitation. Pressure fluctuation suppression is essential for the operation stability and service life of the centrifugal pump. In this paper, a new method of bionic structure is proposed for the blade surface of a centrifugal pump, which is inspired by the fish scale and comprises a leading edge, a trailing edge, and two symmetrical side edges. This fish scale structure is applied to the blade pressure and suction surfaces, and an impeller with a fish scale structure is constructed. A test rig for a centrifugal pump is developed to determine the pressure fluctuation in the pump with a prototype impeller and fish scale structure impeller. Results reveal that the dominant frequency of pressure fluctuation in volute is the blade passing frequency (fbpf) of 193.33 Hz, which is triggered by the interaction between the tongue and the impeller. The bionic structure of the fish scale effectively suppresses the pressure fluctuation amplitude at fbpf. From flow rates of 0.6 Qd to 1.2 Qd, the average suppressions in pressure fluctuation amplitudes at fbpf are 20.98%, 5.85%, 19.20%, and 25.77%.

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Memo

Memo:
Received date:2024-9-19;Accepted date:2024-10-11。<br>Foundation item:This work has been supported by the Open Fund of Science and Technology on Thermal Energy and Power Laboratory [TPL2021A02], the State Key Laboratory of Hydroscience and Engineering [sklhse-2023-E-01]<br>Corresponding author:Lei Tan,E-mail:metrc@sdust.edu.cn
Last Update: 2025-10-24