| 助推器分离过程动态流场数值模拟 |
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| 引用本文： | 马加庆,刘君,周进.助推器分离过程动态流场数值模拟[J].国防科技大学学报,2007,29(6):19-21. |
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| 作者姓名： | 马加庆 刘君 周进 |
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| 作者单位： | 国防科技大学,航天与材料工程学院,湖南,长沙,410073 |
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| 摘 要： | 利用三维N-S方程,采用NND2M有限差分格式作为数值离散方法,对助推器与上面级分离过程的动态流场进行了数值模拟,分析了反作用推力火箭发动机的喷流对上面级弹体底部轴向作用力的影响。根据计算得到的变化规律发现,在分离距离较小的情况下,反推火箭喷流对上面级弹体的干扰作用明显,产生较大轴向作用力,对于上面级飞行稳定性有影响。
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| 关 键 词： | 横向射流 级间分离 数值模拟 |
| 文章编号： | 1001-2486(2007)06-0019-03 |
| 收稿时间： | 7/1/2007 12:00:00 AM |
| 修稿时间： | 2007年7月1日 |
Numerical Simulation of Dynamic Flow Field in Booster Detaching Process |
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| MA Jaqing,LIU Jun and ZHOU Jin.Numerical Simulation of Dynamic Flow Field in Booster Detaching Process[J].Journal of National University of Defense Technology,2007,29(6):19-21. |
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| Authors: | MA Jaqing LIU Jun and ZHOU Jin |
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| Institution: | College of Aerospace and Materials Engineering, National Univ. of Defense Technology, Changsha 410073, China;College of Aerospace and Materials Engineering, National Univ. of Defense Technology, Changsha 410073, China;College of Aerospace and Materials Engineering, National Univ. of Defense Technology, Changsha 410073, China |
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| Abstract: | The 3D N-S equations are numerically solved,while NND2M scheme is used for the discretization of the equations,aimed to simulate the dynamic flow about the process in which booster takes apart from upper stage.The effect that the jet of the counter-thrust rocket motor exerts on the axial force on the base of upper stage body is analyzed.The results of the simulation show a law that counter-thrust rocket jet has a great effect on the upper stage body while the distance between them is short,which produces a big axial force doing harm to the flight stability of upper stage. |
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| Keywords: | transverse jet stage separation numerical simulation |
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