Hydraulic Characteristics of Continuous Submerged Jet Impinging on a Wall by Using Numerical Simulation and PIV Experiment

Hongbo Mi, Chuan Wang, Xuanwen Jia (), Bo Hu, Hongliang Wang, Hui Wang and Yong Zhu
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Hongbo Mi: College of Mechatronics Engineering, Hainan Vocational University of Science and Technology, Haikou 571126, China
Chuan Wang: College of Mechatronics Engineering, Hainan Vocational University of Science and Technology, Haikou 571126, China
Xuanwen Jia: College of Hydraulic Science and Engineering, Yangzhou University, Yangzhou 225009, China
Bo Hu: Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, China
Hongliang Wang: School of Aerospace and Mechanical Engineering/Flight College, Changzhou Institute of Technology, Changzhou 213032, China
Hui Wang: College of Hydraulic Science and Engineering, Yangzhou University, Yangzhou 225009, China
Yong Zhu: National Research Center of Pumps, Jiangsu University, Zhenjiang 212013, China

Sustainability, 2023, vol. 15, issue 6, 1-20

Abstract: Due to their high efficiency, low heat loss and associated sustainability advantages, impinging jets have been used extensively in marine engineering, geotechnical engineering and other engineering practices. In this paper, the flow structure and impact characteristics of impinging jets with different Reynolds numbers and impact distances are systematically studied by Flow-3D based on PIV experiments. In the study, the relevant state parameters of the jets are dimensionlessly treated, obtaining not only the linear relationship between the length of the potential nucleation zone and the impinging distance, but also the linear relationship between the axial velocity and the axial distance in the impinging zone. In addition, after the jet impinges on the flat plate, the vortex action range caused by the wall-attached flow of the jet gradually decreases inward with the increase of the impinging distance. By examining the effect of Reynolds number Re on the hydraulic characteristics of the submerged impact jet, it can be found that the structure of the continuous submerged impact jet is relatively independent of the Reynolds number. At the same time, the final simulation results demonstrate the applicability of the linear relationship between the length of the potential core region and the impact distance. This study provides methodological guidance and theoretical support for relevant engineering practice and subsequent research on impinging jets, which has strong theoretical and practical significance.

Keywords: PIV; Flow-3D; impinging jet; hydraulic characteristics; impinging distance (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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Persistent link: https://EconPapers.repec.org/RePEc:gam:jsusta:v:15:y:2023:i:6:p:5159-:d:1097208

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