Experimental and Numerical Evaluation of the Cavitation Performances of Self-Excited Oscillating Jets

作     者：Yuanyuan Zhao Fujian Zhao Guohui Li Wei Xu Xiuli Wang 

作者机构：School of the Environment and Safety EngineeringJiangsu UniversityZhenjiang212013China Research Center of Fluid Machinery Engineering and TechnologyJiangsu UniversityZhenjiang212013China GongQing Institute of Science and TechnologyJiujiang332020China School of Energy and Power EngineeringJiangsu UniversityZhenjiang212013China 

出 版 物：《Fluid Dynamics & Materials Processing》 (流体力学与材料加工（英文）)

年 卷 期：2024年第20卷第8期

页      面：1883-1901页

核心收录：

学科分类：080704[工学-流体机械及工程] 080103[工学-流体力学] 08[工学] 0807[工学-动力工程及工程热物理] 0801[工学-力学（可授工学、理学学位）] 

基　　金：supported by Key Projects of the Joint Fund of the National Natural Science Foundation of China(U20A20292) The Fundamental Research Funds for the Central Universities(No.JZ2021HGB0090) Key R&D Program of Zhenjiang City(GY2020015) Technology Support Plan(Research on Key Industrial Technologies)(TG202251) Shandong Province Science and Technology SMES Innovation Ability Improvement Project(2023TSGC0005) 

主　　题：Self-excited oscillating nozzle cavitating jet target distant LES cavitation 

摘      要：Self-excited oscillating jets(SOJ)are used in several practical *** performances are significantly affected by structural parameters and the target *** this study,a geometric model of the SOJ nozzle accounting for multiple structural parameters is introduced,then the related cavitation performances and the optimal target distance are investigated using a Large-Eddy Simulation(LES)*** are also provided about an experiment,which was conducted to validate the simulation *** analyzing the evolution of the vapor volume fraction at the nozzle outlet,a discussion is presented about the effect of the aforementioned structural parameters on the cavitation performances and the target *** is shown that the distribution of cavitation clouds at the outlet of the SOJ nozzle displays a non-monotonic trend(first increasing,then decreasing).Under working conditions with an inlet pressure of 4 MPa,a SOJ nozzle outlet/inlet diameter ratio(D_(1)/D_(2))of 1.2,and a chamber diameter ratio(D/L)close to 1.8,the nozzle outlet cavitation performance attains a *** optimal structural parameters correspond to the optimal target distance,which is near 50 *** experiments have revealed that the SOJ nozzle with the above parameters displays a good cavitation erosion effect at the target distance of 50 mm,in satisfactory agreement with the numerical simulation results.