淹没磨料射流的空泡运动分析  

Bubble Motion in Submerged Abrasive Water Jets

作　　者：卢义玉[1] 向文英[1] 李晓红[1] 

机构地区：[1]重庆大学,重庆400044

出　　处：《应用力学学报》2009年第1期8-11,共4页Chinese Journal of Applied Mechanics

基　　金：国家自然科学基金(50621403;50605019);新世纪优秀人才支持计划(NCET-06-0767)

摘　　要：通过对淹没条件下磨料射流的空泡运动分析研究,建立了淹没磨料射流的空泡运动方程,揭示了淹没磨料射流中空泡的溃灭特性,数值模拟了淹没磨料射流的磨料体积浓度以及空泡所处流场压力对空泡运动及溃灭的影响规律。分析表明:淹没磨料射流中磨料的存在增大流体的粘性系数,增大空泡溃灭历时,减弱射流的空蚀破坏能力;流场压力的改变对空泡溃灭过程影响显著,压力越高,空泡溃灭历时越短。Based on the analysis of bubble motion in the submerged abrasive water jet,a bubble motion equation of the submerged abrasive water jet was set up and the characteristics of bubble collapse were investigated.The effects of the abrasive concentration and ambient pressure on the time of bubble collapse were simulated.It is shown that the viscosity coefficient of fluid increases with the abrasive concentration of the submerged abrasive water jet,and the time of bubble collapse becomes longer and cavitaing erosion ability is weakened,while the time of bubble collapse becomes shorter as the ambient pressure increases.

关 键 词：淹没磨料射流 空泡 溃灭 

分 类 号：TU443[建筑科学—岩土工程]