Unsteady Numerical Calculation of Oblique Submerged Jet

Weixuan Jiao, Di Zhang, Chuan Wang, Li Cheng and Tao Wang
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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

Energies, 2020, vol. 13, issue 18, 1-13

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.

Keywords: unsteady flow; numerical simulation; submerged jet (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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