| 无人机箱式发射助推火箭燃气流场数值模拟 |
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| 引用本文： | 卞海忠,李志刚,郭丽芳. 无人机箱式发射助推火箭燃气流场数值模拟[J]. 战术导弹技术, 2011, 0(5): 112-115,120 |
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| 作者姓名： | 卞海忠 李志刚 郭丽芳 |
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| 作者单位： | 南京理工大学机械工程学院; |
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| 摘 要： | 对计算流体力学中的域动分层法动网格更新技术进行了阐述,并且应用该方法对无人机发射时的燃气流场进行数值模拟,得到全流场参数在三维空间上的时间分布.无人机每个时刻的运动速度事先根据推力曲线计算好,随着无人机的运动,根据相应变化的运动边界更新网格,并且计算新网格下的流场分布,相应的流场边界条件也会发生变化.通过分析计算得到的箱上各监测点的压力分布曲线,了解冲击波在箱体表面传播的过程和产生的影响,结果可以为工程应用提供有力的参考.
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| 关 键 词： | 燃气射流 数值模拟 箱式发射 模型 |
Numerical Simulation of Jet Flow Field of Booster Rocket in the Unmanned Vehicle Container Launching Process |
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| Bian Haizhong,Li Zhigang,Guo Lifang. Numerical Simulation of Jet Flow Field of Booster Rocket in the Unmanned Vehicle Container Launching Process[J]. Tactical Missile Technology, 2011, 0(5): 112-115,120 |
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| Authors: | Bian Haizhong Li Zhigang Guo Lifang |
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| Affiliation: | Bian Haizhong,Li Zhigang,Guo Lifang (School of Mechanical Engineering,Nanjing University of Science& Technology,Nanjing 210094,China) |
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| Abstract: | A new dynamic mesh update method which is zone moving and dynamic layering method in the computational fluid dynamics was presented.The method was used for numerical simulation of the unmanned vehicle launching,and three-dimensional jet flow field distribution was obtained.The velocity-time curve of the unmanned vehicle was previously calculated.New jet flow field distribution was computed using new updated mesh and the boundary conditions of the flow field changed by the motion of the plane.The distributio... |
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| Keywords: | jet flow numerical simulation container launching RNG k-εmodel |
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