| 运动激波绕射过程中的粘性效应 |
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| 引用本文： | 蔡罕龙,李素循.运动激波绕射过程中的粘性效应[J].航空学报,1995,16(6):688-691. |
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| 作者姓名： | 蔡罕龙 李素循 |
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| 作者单位： | 北京空气动力研究所!北京，100074，北京空气动力研究所!北京，100074 |
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| 基金项目： | 国家自然科学 (青年 )基金资助课题 |
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| 摘 要： | 应用 TVD格式求解二维非定常全 N- S方程 ,以研究运动激波绕射现象。考虑粘性后 ,绕凹角流动时 ,压缩拐角附近表面压力分布与实验结果更为符合 ;绕凸起物时 ,出现反射激波因边界层干扰根部加宽 ,前、后角点附近有局部分离与再附 ,并引起局部压力上升 (与无粘流场模拟相比 )等现象。结果表明 ,全 N- S方程可较好地模拟实际粘性流中复杂激波障碍物干扰流场特性
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| 关 键 词： | TVD格式 激波 粘性流 纳维-斯托克斯方程 |
VISCOUS EFFECT IN MOVING SHOCK DIFFRACTION OVER OBSTACLES |
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| Cai Hanlong,Li Suxun.VISCOUS EFFECT IN MOVING SHOCK DIFFRACTION OVER OBSTACLES[J].Acta Aeronautica et Astronautica Sinica,1995,16(6):688-691. |
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| Authors: | Cai Hanlong Li Suxun |
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| Institution: | Beijing Institute of Aerodynamics,Beijing,100074 |
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| Abstract: | A TVD scheme is used to solve the 2D unsteady full N S equation and the phenomenon of moving shock diffraction is studied. The surface pressure computed with viscous equations is more in agreement with experiment on a wedge corner. As a shock wave impinges on an obstacle, the reflex wave root is widened due to boundary layer interaction. Separating, reattachment and vortex induced by viscous effect in some region are shown in the paper. From the results, a numerical simulation with the full N S equation can get the characteristics of the shock wave interaction with the viscous effect. |
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| Keywords: | TVD schemes shock waves viscous flow Navier Stokes equation |
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