机械科学与技术2023，Vol.42Issue(12)：2064-2071,8.DOI:10.13433/j.cnki.1003-8728.20220173
多种后混合磨料水射流喷嘴的数值模拟及分析比较
Numerical Simulation and Analysis Comparison of Various Post-mixed Abrasive Water Jet Nozzle
摘要
Abstract
Because of poor mixing uniformity and low jet energy of abrasive water in the traditional post-mixed abrasive waterjet nozzle,the paper uses the CFD Euler multiphase flow model and the Fluent software to analyze and compare the abrasive side-feed nozzle,the abrasive medium-feed type and the improved abrasive medium-feed nozzle.The analysis results show that the abrasive water of the abrasive side-feed nozzle is mainly distributed in the low-velocity area and fails to enter into the high-speed water stream,resulting in poor mixing uniformity and low jet energy.The abrasive medium-feed nozzle solves the problem that abrasive water enters into the high-speed water stream and that the abrasive volume fraction and abrasive velocity gradually decrease from the center to the outside,significantly improving the jet effect.The improved abrasive inlet nozzle reduces the collision loss of the high-speed water flow in the original abrasive inlet nozzle's mixing chamber,somewhat increasing the speed and kinetic energy of the abrasive water in the external flow field.关键词
混合均匀性/射流能量/数值模拟/磨料速度/磨料体积分数Key words
mixing uniformity/jet energy/numerical simulation/abrasive speed/abrasive volume fraction分类
矿业与冶金引用本文复制引用
吴伟,唐勇,袁硕,李明杰..多种后混合磨料水射流喷嘴的数值模拟及分析比较[J].机械科学与技术,2023,42(12):2064-2071,8.基金项目
湖南省科技成果转化及产业化计划项目(2020GK2087) （2020GK2087）
