| 弹射座椅系统外高速流场的数值模拟 |
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| 引用本文： | 张大林,魏涛,姜南.弹射座椅系统外高速流场的数值模拟[J].南京航空航天大学学报,2009,41(2). |
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| 作者姓名： | 张大林 魏涛 姜南 |
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| 作者单位： | 1. 南京航空航天大学航空宇航学院,南京,210016
2. 航字救生装备有限公司,襄樊,441003 |
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| 摘 要： | 对绕弹射座椅系统的高速流场进行了数值模拟.控制方程为雷诺平均的Navier-Stokes方程,空间离散为Osher逆风格式和五步龙格库塔格式,湍流模拟采用了基于M-SST两方程紊流模型的DES方法,计算中采用了区域分裂的并行技术.对来流马赫数分别为0.6,1.2的流场进行了计算,计算结果表明该方法可以较好地模拟弹射座椅系统外的高速流场.
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| 关 键 词： | 弹射座椅系统 数值模拟 逆风格式 Navier-Stokes方程 |
Numerical Simulation of High Speed Flow Field Around Ejection System |
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| Zhang Dalin,Wei Tao,Jiang Nan.Numerical Simulation of High Speed Flow Field Around Ejection System[J].Journal of Nanjing University of Aeronautics & Astronautics,2009,41(2). |
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| Authors: | Zhang Dalin Wei Tao Jiang Nan |
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| Institution: | 1.College of Aerospace Engineering;Nanjing University of Aeronautics & Astronautics;Nanjing;210016;China;2.Aerospace Life-Support Industries Ltd;Xiangfan;441003;China |
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| Abstract: | Aerodynamic characteristics of an ejection seat system at different attack angles are studied by the numerical method and the flow mechanisms of the flow field are analyzed.The governing equations are Reynolds-averaged Navier-Stokes equations solved by the unstructured finite volume method.Upwind Osher scheme is used for spatial discretisation and five-stage Runge-Kutta scheme is used for temporal discretisation.The detached eddy simulation(DES) model based on Menter-shear stress transport(M-SST) two equati... |
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| Keywords: | DES |
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