一种新型磨料射流除鳞喷头内外流场的数值模拟及实验研究  

Numerical simulation and experimental study on the inside and outside flow field for a new type of abrasive descaling nozzle

作　　者：吴伟 唐勇[1] 袁硕 李文波 谭沁源 刘碧芋 WU Wei;TANG Yong;YUAN Shuo;LI Wenbo;TAN Qinyuan;LIU Biyu(High Pressure Water Jet of Research Institution,Changsha Institute of Mining Research,Changsha 410012,China;National Engineering Research Center for Metal Mining,Changsha 410012,China;School of Mechanical and Vehicle Engineering,Hunan University,Changsha 410082,China)

机构地区：[1]长沙矿山研究院高压水射流研究所,长沙410012 [2]国家金属采矿工程技术研究中心,长沙410012 [3]湖南大学机械与运载工程学院,长沙410082

出　　处：《现代制造工程》2022年第10期101-106,共6页Modern Manufacturing Engineering

基　　金：湖南省科技成果转化及产业化计划项目(2020GK2087)。

摘　　要：为了加强磨料颗粒流在工业除鳞上的作用效果,提出一种新型磨料射流除鳞喷头,并在额定工况条件下进行数值模拟,得到了6组不同靶距下的外流场数值结果。结果表明:该新型磨料射流除鳞喷头在外流场的磨料颗粒主要集中于靶面中心区域,磨料颗粒流沿靶面各方向的速度梯度变化较小,速度大小分布较均匀,喷头有较好的除鳞效果,且拟合的磨料颗粒流在外流场的有效除鳞宽度随喷头靶距变化的经验公式结果也与实验结果基本吻合。该新型喷头及相关结果可为磨料射流除鳞喷头的选型及优化设计提供一定的参考及理论支撑。In order to enhance the effect of abrasive particle flow on industrial descaling,a new type of abrasive descaling nozzle was proposed,and numerical simulation was carried out under rated operating conditions,and 6 sets of numerical results of the external flow field under different target distances were obtained.The results show that the abrasive particles in the external flow field of the new type of abrasive descaling nozzle were mainly concentrated in the central area of the target surface,the velocity gradient of the abrasive particle flow along the target surface in all directions is small,the velocity distribution is relatively uniform,and the nozzle has a good descaling effect.In addition,the fitting empirical formula of the change of effective descaling width of the abrasive particle flow in the external flow field with the nozzle target distance is also in good agreement with the experimental results.The new nozzle and related results can provide certain reference and theoretical support for the selection and optimal design of abrasive descaling nozzles.

关 键 词：数值模拟 实验研究 磨料体积分数 磨料速度 

分 类 号：TP69[自动化与计算机技术—控制理论与控制工程]