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Numerical Study of the Normal Impinging Water Jet at Different Impinging Height, Based on Wray–Agarwal Turbulence Model

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  • Hongliang Wang

    (State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, China
    School of Aerospace and Mechanical Engineering/Flight College, Changzhou Institute of Technology, Changzhou 213032, China)

  • Zhongdong Qian

    (State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, China)

  • Di Zhang

    (College of Hydraulic Science and Engineering, Yangzhou University, Yangzhou 225009, China)

  • Tao Wang

    (Key Laboratory of Fluid and Power Machinery, Ministry of Education, School of Energy & Power Engineering, Xihua University, Chengdu 610039, China)

  • Chuan Wang

    (College of Hydraulic Science and Engineering, Yangzhou University, Yangzhou 225009, China)

Abstract

As a kind of water jet technology with strong impinging force and simple structure, the submerged impinging water jet can produce strong scouring action on subaqueous sediments. In order to investigate the flow field characteristics and impinging pressure of submerged impinging water jets at different impinging heights, the Wray-Agarwal (W-A) turbulence model is used for calculation. The velocity distribution and flow field structure at different impinging heights (1 ≤ H/D ≤ 8), and the impinging pressure distribution at the impingement plate under different Reynolds numbers (11, 700 ≤ Re ≤ 35100) are studied. The results show that with the increase of the impinging height, the diffusion degree increases and the velocity decreases gradually when the jet reaches the impingement region. The fluid accelerates first and then decelerates near the stagnation point. The maximum impinging pressure and the impinging pressure coefficient decrease with the increase of the impinging height, but the effective impinging pressure range remains unchanged. In this paper, the distribution characteristics of the impinging pressure in the region of the impingement plate at different heights are clarified, which provides theoretical support for the prediction method of the impinging pressure.

Suggested Citation

  • Hongliang Wang & Zhongdong Qian & Di Zhang & Tao Wang & Chuan Wang, 2020. "Numerical Study of the Normal Impinging Water Jet at Different Impinging Height, Based on Wray–Agarwal Turbulence Model," Energies, MDPI, vol. 13(7), pages 1-15, April.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:7:p:1744-:d:341785
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    References listed on IDEAS

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    1. Hongliang Wang & Bing Long & Chuan Wang & Chen Han & Linjian Li, 2020. "Effects of the Impeller Blade with a Slot Structure on the Centrifugal Pump Performance," Energies, MDPI, vol. 13(7), pages 1-17, April.
    2. Lijian Shi & Jun Zhu & Fangping Tang & Chuan Wang, 2020. "Multi-Disciplinary Optimization Design of Axial-Flow Pump Impellers Based on the Approximation Model," Energies, MDPI, vol. 13(4), pages 1-19, February.
    3. Xiaoke He & Yingchong Zhang & Chuan Wang & Congcong Zhang & Li Cheng & Kun Chen & Bo Hu, 2020. "Influence of Critical Wall Roughness on the Performance of Double-Channel Sewage Pump," Energies, MDPI, vol. 13(2), pages 1-20, January.
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    Cited by:

    1. Weixuan Jiao & Di Zhang & Chuan Wang & Li Cheng & Tao Wang, 2020. "Unsteady Numerical Calculation of Oblique Submerged Jet," Energies, MDPI, vol. 13(18), pages 1-13, September.

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