现代制造工程Issue(1)：1-6,18,7.DOI:10.16731/j.cnki.1671-3133.2017.01.001
气动式喷射阀泄压过程数值模拟与分析
Numerical simulation and analysis of pressure relief process of pneumatic jetting valve
摘要
Abstract
Taking the pressure relief process of pneumatic jetting valve as the research object,the two-dimension model of coupled system of pressure relief process and needle motion process were putted forward,the unsteady flow field was calculated by finite volume method and dynamic mesh with the turbulence k-ε model,then the pressure relief curve of back pressure zone and needle motion curve was achieved.The results show that the jetting performance is limited for great back pressure resistance in jetting.By reducing pressure relief airway length or increasing pressure relief airway diameter,the needle speed can be increased and the needle motion response time can be reduced.The calculation results are consistent with those of experiment,which illustrates a new way for calculation and analysis of pneumatic jet dispensing and provides reference for structure optimization of the valve.关键词
喷射点胶/泄压过程/撞针运动/有限体积法Key words
jet dispensing/pressure relief process/needle motion/finite volume method分类
机械制造引用本文复制引用
李渭松,单修洋,魏新明..气动式喷射阀泄压过程数值模拟与分析[J].现代制造工程,2017,(1):1-6,18,7.基金项目
国家重点基础研究发展计划(973计划)项目(2011CB013104) （973计划）
