首页 | 本学科首页   官方微博 | 高级检索  
     

弹头外形不同尺度模型对二维射流流场的影响
引用本文:姚伟刚,陈志敏,罗振谊. 弹头外形不同尺度模型对二维射流流场的影响[J]. 推进技术, 2006, 27(4): 336-338
作者姓名:姚伟刚  陈志敏  罗振谊
作者单位:西北工业大学,航空学院,陕西,西安,710072
摘    要:超声速射流装置能很好地模拟榴弹引信发电机飞行时大气环境的工况,并成为地面考核和验收必不可少的设备。从二维轴对称N-S方程出发,利用二阶精度有限体积法和S-A湍流模型,对超声速射流装置的自由射流流场以及不同模型尺寸对超声速流场结构的影响进行了模拟计算。给出了激波与射流边界之间复杂干扰流场结构图,结果证明不同模型的尺寸对超声速射流流场有较大的影响。

关 键 词:超声速射流装置~   数值仿真  有限体积法  N-S方程
文章编号:1001-4055(2006)04-0336-03
收稿时间:2005-06-23
修稿时间:2005-11-12

Effects of warhead model dimension on two-dimensional supersonic jet field
YAO Wei-gang,CHEN Zhi-min and LUO Zhen-yi. Effects of warhead model dimension on two-dimensional supersonic jet field[J]. Journal of Propulsion Technology, 2006, 27(4): 336-338
Authors:YAO Wei-gang  CHEN Zhi-min  LUO Zhen-yi
Abstract:In the research of supersonic projectile as well as dynamotor of missile fuze power supply system, it used to experiment in conventional wind tunnel, the experiment data cannot agree with the true flight data well entirely due to side wall effects and other special factors. Supersonic jet facility which suits aerodynamic dynamotor was designed. Supersonic jet flow facility is a remarkable special experimental facility. It could model the true atmosphere condition. The supersonic jet flow field was calculated by solving full N-S equation to decide the suitable model dimension. The Mach number contours of shock wave interaction were also given, which illuminates model dimension has great influence on the flow field of supersonic jet. The result indicates that model dimension plays an important role in aerodynamic dynamotor experiment.
Keywords:Supersonic jet flow facility~+  Numerical simulation  Finite element method  N-S equation  
本文献已被 CNKI 维普 万方数据 等数据库收录!
点击此处可从《推进技术》浏览原始摘要信息
点击此处可从《推进技术》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号