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Study on Drag and Noise Reduction of Bionic Blade of Centrifugal Pump and Mechanism

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Abstract

In order to study the relationship between the important parameters of internal flow and the effect of drag and noise reduction, the internal flow field and sound field characteristics of bionic centrifugal pump are studied in this paper. Based on the methods of theoretical analysis, numerical simulation and test, the relationship between wall average shear stress, drag reduction rate, increasing efficiency and noise reduction rate of internal sound field is studied. Internal flow parameters to judge and predict the effect of drag and noise reduction are revealed. The results show that the bionic pit can effectively increase the thickness of the boundary layer and reduce the Reynolds stress on the wall. The resistance on the wall is reduced and the hydraulic efficiency of the centrifugal pump is increased. The noise reduction rate is basically consistent with the changing trend of the drag reduction rate, increasing efficiency and wall average shear stress in the flow field. Wall average shear stress can reveal the effect of drag and noise reduction, so the effect of drag and noise reduction can be predicted and judged by the change of wall average shear stress.

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Acknowledgment

This work was supported by National Natural Science Foundation of China (Nos. 51879122, 51579117 and 51779106), National Key Research and Development Program of China (Nos. 2016YFB0200901 and 2017YFC0804107), Zhenjiang key research and development plan (Nos. GY2017001 and GY2018025), the Open Research Subject of Key Labo-ratory of Fluid and Power Machinery, Ministry of Education, Xihua University (Nos. szjj2017-094 and szjj2016-068), Sichuan Provincial Key Lab of Process Equipment and Control (Nos. GK201614 and GK201816), Jiangsu University Young Talent training Program-Outstanding Young backbone Teacher, Program Development of Jiangsu Higher Education Institutions (PAPD), and Jiangsu top six talent summit project (GDZB-017).

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Authors and Affiliations

  1. School of Energy and Power Engineering, Jiangsu University, Zhenjiang, 212013, China

    Cui Dai

  2. Research Center of Fluid Machinery Engineering and Technology, Jiangsu University, Zhenjiang, 212013, China

    Chao Guo, Zhipeng Ge, Houlin Liu & Liang Dong

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  1. Cui Dai
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  2. Chao Guo
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  3. Zhipeng Ge
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  4. Houlin Liu
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  5. Liang Dong
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Correspondence to Liang Dong.

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Dai, C., Guo, C., Ge, Z. et al. Study on Drag and Noise Reduction of Bionic Blade of Centrifugal Pump and Mechanism. J Bionic Eng 18, 428–440 (2021). https://doi.org/10.1007/s42235-021-0021-3

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  • DOI: https://doi.org/10.1007/s42235-021-0021-3

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