| 引用本文: | 李桦,范晓樯,丁猛.超声速扩压器中激波串结构的数值模拟.[J].国防科技大学学报,2002,24(1):18-21.[点击复制] |
| LI Hua,FAN Xiaoqiang,DING Meng.Numerical Simulatiom of the Shock Train Structure in the Supersonic Diffuser[J].Journal of National University of Defense Technology,2002,24(1):18-21[点击复制] |
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| 超声速扩压器中激波串结构的数值模拟 |
| 李桦, 范晓樯, 丁猛 |
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(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: |
| 通过求解由BL湍流模型封闭的二维、轴对称及三维雷诺平均N-S方程，数值模拟了等截面超声速扩压器中由激波/附面层干扰诱导的复杂流场，比较了二维直管、圆截面直管及三维矩形截面直管中的流场特性、激波串长度及压强恢复程度。在来流马赫数为3.0的二维直管计算中，采用四步Runge-Kutta显式方法数值仿真了激波串自激振荡过程，并与实验结果作了对比分析。 |
| 关键词: 超声速 激波串 数值仿真 扩压器 |
| DOI： |
| 投稿日期：2001-09-14 |
| 基金项目:湖南省自然科学基金资助项目(99JJY2005)；国防科大基础研究资助项目(JC01-01-002) |
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| Numerical Simulatiom of the Shock Train Structure in the Supersonic Diffuser |
| LI Hua, FAN Xiaoqiang, DING Meng |
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(College of Aerospace and Materials Engineering, National Univ. of Defense Technology, Changsha 410073,China)
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| Abstract: |
| Complicated flow field of shock/boundary layer interaction in the supersonic diffuser is simulated by solving the Reynolds-averaged Navier-stokes equations in 2D,axisymmetric and 3D cases. The length of shock train, the distance of each shocks in it and the level of pressure recovered are compared with each case. Also, the oscillation phenomenon of the shock train is captured through Runge-Kutta method when the freestream mach number is 3 and the results are compared with experimental data. |
| Keywords: supersonic shock train numerical simulation diffuser |
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