文献类型：期刊文献

中文题名：导弹热发射燃气射流对发射筒的影响

英文题名：The Effect of Missile Thermal Emission Gas Jet on the Launch Tube

作者：邓春丽 袁森 张秀华

第一作者：邓春丽

机构：[1]贵州大学机械工程学院,贵阳550025;[2]贵州理工学院机械工程学院,贵阳550003;[3]贵州民族大学机械电子工程学院,贵阳550025

第一机构：贵州大学机械工程学院,贵阳550025

年份：2020

卷号：20

期号：13

起止页码：5117-5122

中文期刊名：科学技术与工程

外文期刊名：Science Technology and Engineering

收录：CSTPCD;;北大核心:【北大核心2017】；

基金：贵州省自然科学基金(黔科合基础20191166);校企合作项目(QC20190036);贵州省重点学科建设计划任务书(ZDXK201622)。

语种：中文

中文关键词：筒体;燃气射流;冲击效应;域动分层法

外文关键词：cylinder;gas jet;impact effect;domain dynamic stratification

摘要：为研究导弹热发射过程中燃气射流对筒体的热冲击和动力冲击效应,基于三维、雷诺平均Navier-Stokes方程和RNG(renormalization-group)κ-ε湍流模型,采用域动分层法模拟导弹发射过程,得到了导弹发射过程中筒内的温度、速度、压强云图及筒壁监测点的压强和温度变化曲线。结果表明:发射筒前后盖打开以后,筒内燃气无反射回流现象;导弹发射过程中,筒内的高压燃气向外压迫筒壁,使筒体产生最大变形为0.68 mm;发射筒在最大温度载荷作用下产生的热变形为0.1 mm。
To study the thermal shock and dynamic shock effects of gas jet on the cylinder during the thermal launch of a missile,based on the Reynolds average Navier-Stokes equation and renormalization-group(RNG)turbulence model in 3D,the domain missile launching process was simulated,and the temperature,velocity,pressure data were obtained,from which the cloud map,and pressure and temperature curves of the monitoring point in the cylinder were built.Results show that after the front and rear covers of the launching tube were opened,there was no reflection and backflow of gas in the cylinder.During the missile launching process,the high-pressure gas in the cylinder pressed the cylinder wall outward,and the maximum deformation of the cylinder was 0.68 mm.The thermal deformation was 0.1 mm at the maximum temperature load of the launching cylinder.