化工进展2012，Vol.31Issue(1)：30-34,5.
高速水射流粉碎中射流冲击区水垫的增阻效应
Research of water cushion increased resistance effect of jet impact area during the process of high-speed water jet crushing
摘要
Abstract
In order to understand the characteristics of high-speed water jet impact zone and effect of material crushing,the research on water cushion in impact zone and influence of material crushing has been conducted according to the theoretical analysis,numerical computation and high pressure water jet smash experiment results obtained from a self-designed afterward mixing facility with coal as main crushing material.The result shows that there is a water cushion with about 10 times of r0 in the range of target body impact area of high-speed water jet.The water cushion of the jet impact zone is unfavorable for the crushing.There is certain effect on the crushing efficiency especially on the reduction of the low size fraction level product with increased resistance of water cushion.It is more efficient without increased resistance of water cushion.Research about increased resistance of water cushion to the reduction mechanism of water jet impact zone provides certain theory and design reference to the research practice on water jet crushing technology and equipment.关键词
高速水射流/粉碎技术/冲击区/水垫增阻/粉碎机理Key words
high-speed water jet/crushing technology/impact area/water cushion increased resistance/crushing mechanism分类
矿业与冶金引用本文复制引用
万继伟,牛争鸣,牛助农..高速水射流粉碎中射流冲击区水垫的增阻效应[J].化工进展,2012,31(1):30-34,5.基金项目
陕西省重点学科建设专项资金项目 （）
