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Research on Flow Field Characteristics in Water Jet Nozzle and Surface Damage Caused by Target Impact

Author

Listed:
  • Qinghong Zhang

    (School of Mechanical Engineering, Nantong University, Nantong 226019, China)

  • Zhouhao Shi

    (School of Mechanical Engineering, Nantong University, Nantong 226019, China)

  • Weidong Shi

    (School of Mechanical Engineering, Nantong University, Nantong 226019, China)

  • Zhanshan Xie

    (School of Mechanical Engineering, Nantong University, Nantong 226019, China)

  • Linwei Tan

    (School of Mechanical Engineering, Nantong University, Nantong 226019, China)

  • Yongfei Yang

    (School of Mechanical Engineering, Nantong University, Nantong 226019, China)

Abstract

As a new processing method, water jet processing technology has risen rapidly due to its wide range of applications, no pollution, and zero discharge. In this paper, the flow characteristics and failure characteristics of ultra-high-pressure gas-liquid jet in the range of 300 MPa are analyzed by numerical calculation. The research conclusion shows that the jet atomization diffusion is caused by the friction between the liquid medium and the surrounding gas, the mixed flow of broken water droplets and cavitation. The jet diffusion process is essentially the energy exchange process between the jet in the core area and the turbulent flow in the atomization area. The distribution of the turbulent kinetic energy in the atomization area can determine the degree of jet diffusion and the rate of energy decay. The water jet impacted the surface of the target to form a crater-like annular erosion pit. With the increase of the impact pressure, the deformation showed an overall increasing trend, and the increasing trend increased significantly. The central depression of the erosion area is caused by the damage of the material by the stagnation pressure in the core area. The flow characteristics of gas-liquid flow in the process of formation and diffusion in the high-pressure water jet nozzle are explored from the microscopic point of view, and it also provides a theoretical basis for equipment optimization in engineering.

Suggested Citation

  • Qinghong Zhang & Zhouhao Shi & Weidong Shi & Zhanshan Xie & Linwei Tan & Yongfei Yang, 2022. "Research on Flow Field Characteristics in Water Jet Nozzle and Surface Damage Caused by Target Impact," Sustainability, MDPI, vol. 14(15), pages 1-13, July.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:15:p:9074-:d:870713
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    References listed on IDEAS

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    1. Zhang, Yuquan & Zang, Wei & Zheng, Jinhai & Cappietti, Lorenzo & Zhang, Jisheng & Zheng, Yuan & Fernandez-Rodriguez, E., 2021. "The influence of waves propagating with the current on the wake of a tidal stream turbine," Applied Energy, Elsevier, vol. 290(C).
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    Cited by:

    1. Xin He & Changjiang Yuan & Haoran Gao & Yaqing Chen & Rui Zhao, 2023. "Calibration of Turbulent Model Constants Based on Experimental Data Assimilation: Numerical Prediction of Subsonic Jet Flow Characteristics," Sustainability, MDPI, vol. 15(13), pages 1-18, June.

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