| EVOLUTION OF A 2-D DISTURBANCE IN A SUPERSONIC BOUNDARY LAYER AND THE GENERATION OF SHOCKLETS |
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| 作者姓名： | 黄章峰 周恒 |
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| 作者单位： | [1]DepartmentofMechanics,TianjinUniversity,Tianjing300072,P.R.China [2]LiuHuiCenterofAppliedMathematics,Nankai＆TianjinUniversity,Tianjin300072,P.R.China |
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| 基金项目： | 国家自然科学基金，Foundation of Liu Hui Center for Applied Mathematics |
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| 摘 要： | Through direct numerical simulation, the evolution of a 2-D disturbance in a supersonic boundary layer has been investigated. At a chosen location, a small amplitude T-S wave was fed into the boundary layer to investigate its evolution. Characteristics of nonlinear evolution have been found. Two methods were applied for the detection of shocklets, and it was found that when the amplitude of the disturbance reached a certain value, shocklets would be generated, which should be taken into consideration when nonlinear theory of hydrodynamic stability for compressible flows is to be established.
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| 关 键 词： | 流体力学 数值模拟 超声波边界层 T-S波 流体稳定性 可压缩流 干扰 |
| 收稿时间： | 20 August 2002 |
Evolution of a 2-D disturbance in a supersonic boundary layer and the generation of shocklets |
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| Huang?Zhang-feng,Zhou?HengEmail author.EVOLUTION OF A 2-D DISTURBANCE IN A SUPERSONIC BOUNDARY LAYER AND THE GENERATION OF SHOCKLETS[J].Applied Mathematics and Mechanics(English Edition),2004,25(1):1-9. |
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| Authors: | Huang?Zhang-feng Email author" target="_blank">Zhou?HengEmail author |
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| Institution: | 1. Department of Mechanics, Tianjin University, Tianjing 300072, P.R. China
2. Department of Mechanics, Tianjin University, Tianjing 300072, P.R. China;Liu Hui Center of Applied Mathematics, Nankai & Tianjin University, Tianjin 300072, P.R. China |
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| Abstract: | Through direct numerical simulation, the evolution of a 2-D disturbance in a supersonic boundary layer has been investigated.
At a chosen location, a small amplitude TS wave was fed into the boundary layer to investigate its evolution. Characteristics
of nonlinear evolution have been found. Two methods were applied for the detection of shocklets, and it was found that when
the amplitude of the disturbance reached a certain value, shocklets would be generated, which should be taken into consideration
when nonlinear theory of hydrodynamic stability for compressible flows is to be established.
Contributed by ZHOU Heng
Foundation items: the National Natural Science Foundation of China (90205021); the Foundation of Liu Hui Center for Applied Mathematics, Nankai
& Tianjin University
Biographies: HUANG Zhang-feng (E-mail: hzf_tju@eyou.com)(1977∼), Master ZHOU Heng (1929∼) (Tel: 86-022-27890533; fax: 86-022-27405200;
E-mail: hzhoul@tju.edu.cn)(corresponding author) Professor, Academician of Chinese Academy of Science |
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| Keywords: | supersonic boundary layer evolution of disturbance shocklet |
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