| 隔离段内超声速流动摩擦阻力分析 |
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| 引用本文： | 骆晓臣,张堃元.隔离段内超声速流动摩擦阻力分析[J].空气动力学学报,2009,27(1). |
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| 作者姓名： | 骆晓臣 张堃元 |
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| 作者单位： | 南京航空航天大学,能源与动力学院,江苏,南京,210016 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 以超燃冲压发动机等截面隔离段内部流动阻力特性为研究背景,以数值模拟和实验测量为研究手段,研究马赫数2.5来流条件下,平板流动和带激波反射流动条件下的壁面摩擦阻力.实验测量得到了超声速流动下的壁面摩擦阻力.研究发现,当激波反射形成局部微小分离时,激波和边界层的相互作用使得分离区下游的壁面剪切应力恢复为比分离区上游稍高水平.存在激波反射时,壁面总的摩擦阻力略大于无激波时的平板流动.
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| 关 键 词： | 隔离段 阻力 摩擦阻力 激波-边界层相互作用 |
Analysis of friction drag in scramjet isolator |
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| LUO Xiao-chen,ZHANG Kun-yuan.Analysis of friction drag in scramjet isolator[J].Acta Aerodynamica Sinica,2009,27(1). |
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| Authors: | LUO Xiao-chen ZHANG Kun-yuan |
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| Institution: | Coll.of Energy and Power Engineering;Nanjing Univ.of Aeronautics and Astronautics;Nanjing 210016;China |
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| Abstract: | Skin friction drags of flow with incoming Mach number of 2.5 on an insulated flat plate with and without shock impingement were studied through numerical simulations and experimental measurements.It is for the requirement of flow drag characteristics in constant section isolator of scramjet.Skin friction drags were measured in supersonic flow.When shock reflected on the wall and induced flow separating in small region,the interaction between shock and turbulent boundary layer made the skin friction level in... |
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| Keywords: | isolator drag friction drag shock wave/boundary layer interaction |
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