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Unsteady Numerical Calculation of Oblique Submerged Jet

Author

Listed:
  • Weixuan Jiao

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

  • Di Zhang

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

  • Chuan Wang

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

  • Li Cheng

    (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)

Abstract

A water jet is a kind of high-speed dynamic fluid with high energy, which is widely used in the engineering field. In order to analyze the characteristics of the flow field and the change of law of the bottom impact pressure of the oblique submerged impinging jet at different times, its unsteady characteristics at different Reynolds numbers were studied by using the Wray–Agarwal (W-A) turbulence model. It can be seen from the results that in the process of jet movement, the pressure at the peak of velocity on the axis was the smallest, and the velocity, flow angle, and pressure distribution remain unchanged after a certain time. In the free jet region, the velocity, flow angle, and pressure remained unchanged. In the impingement region, the velocity and flow angle decreased rapidly, while the pressure increased rapidly. The maximum pressure coefficient of the impingement plate changed with time and was affected by the Reynolds number, but the distribution trend remained the same. In this paper, the characteristics of the flow field and the law of the impact pressure changing with time are described.

Suggested Citation

  • 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.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:18:p:4728-:d:411925
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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. 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.
    3. 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.
    4. Shi, Lijian & Zhang, Wenpeng & Jiao, Haifeng & Tang, Fangping & Wang, Li & Sun, Dandan & Shi, Wei, 2020. "Numerical simulation and experimental study on the comparison of the hydraulic characteristics of an axial-flow pump and a full tubular pump," Renewable Energy, Elsevier, vol. 153(C), pages 1455-1464.
    5. 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:

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