| 二维空腔超声速流动特性及形状影响数值研究 |
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| 引用本文： | 刘琼,桑为民,雷熙薇.二维空腔超声速流动特性及形状影响数值研究[J].航空计算技术,2010,40(6):81-85. |
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| 作者姓名： | 刘琼 桑为民 雷熙薇 |
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| 作者单位： | [1]西北工业大学航空学院,陕西西安710072 [2]中航工业第一飞机设计研究院,陕西西安710089 |
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| 摘 要： | 内埋式武器装载是实现战斗机隐身、超声速巡航和高机动性能的综合选择,已逐步成为新型战斗机武器装载的发展趋势。采用雷诺平均N-S方程和S-A湍流模型,模拟了矩形空腔和非矩形空腔的流动特性。通过分析空腔的流线图、压力云图和底部压力分布曲线,可知长深比是影响空腔流动类型和流动特性的关键因素,改变空腔后壁倾角、底面斜坡角度和前壁倾角对回流区结构及压力分布特性有明显影响。
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| 关 键 词： | 空腔流动 Navier-Stokes方程 数值模拟 流动特性 |
Numerical Simulation of Flow Characteristics and Cavity Configuration Impact on the Supersonic Cavity Flow |
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| LIU Qiong,SANG Wei-min,LEI Xi-wei.Numerical Simulation of Flow Characteristics and Cavity Configuration Impact on the Supersonic Cavity Flow[J].Aeronautical Computer Technique,2010,40(6):81-85. |
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| Authors: | LIU Qiong SANG Wei-min LEI Xi-wei |
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| Institution: | 1.Northwestern Polytechnical University,710072 Xi′an,China;2.The First Aircraft Institute of AVIC,710089 Xi′an,China) |
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| Abstract: | Internal carriage of stores has become a trend for advanced aircraft,which can actualize stealth,supersonic cruise and high mobility of the aircraft.This paper uses the Reynolds-Averaged N-S equation（RANS） with the S-A turbulence model to calculate the flow characteristic of the rectangular cavities and non-rectangle cavities.After analyzing pressure contours,streamlines and pressure coefficient distribution,we can find that L/D is a key parameter influencing on cavity flow type.Angles of rear wall affect the structure of the circumfluence and the pressure distribution in cavities. |
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| Keywords: | cavity flow reynolds-averaged N-S equation numerical simulation flow characteristics |
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