A Combined Experimental and Numerical Study of Shotcrete Jets and Related Wet Spray Nozzles
作者机构：State Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal MinesHuainan232001China School of Mechanical EngineeringAnhui University of Science and TechnologyHuainan232001China School of Civil Engineering and ArchitectureAnhui University of Science and TechnologyHuainan232001China State Key Laboratory of Safety and Health for Metal MinesMaanshan243000China
出 版 物：《Fluid Dynamics & Materials Processing》 (流体力学与材料加工（英文）)
年 卷 期：2020年第16卷第5期
页 面：947-960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] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 0801[工学-力学（可授工学、理学学位）]
主 题：Shotcrete wet spraying nozzle turbulence flow convergence angle numerical simulation
摘 要：In this research,the dynamics of wet spray nozzles with different geometries,used to accelerate shotcrete,are investigated on the basis of a suitable three-dimensional mathematical model and related numerical *** have been conducted in the frame of the SIMPLEC *** k-εturbulence model has been used to account for turbulent *** study shows that when the angle of the convergent section is less than 3°,it has a scarce effect on the dynamics of the jet of shotcrete;with the increase of the convergence angle,the shotcrete jet velocity decreases and the nozzle wear increases;when this angle is greater than 6°,the concrete outlet jet velocity is very small and the nozzle can easily be *** results are in good agreement with the outcomes of the numerical simulations,which indicates that the used approach is reliable.
维普期刊数据库