Applied Mathematics and Mechanics (English Edition) ›› 2004, Vol. 25 ›› Issue (1): 1-9.

• Articles •     Next Articles

EVOLUTION OF A 2-D DISTURBANCE IN A SUPERSONIC BOUNDARY LAYER AND THE GENERATION OF SHOCKLETS

HUANG Zhang-feng1, ZHOU Heng1,2   

  1. 1. Department of Mechanics, Tianjin University, Tianjing 300072, P. R. China;
    2. Liu Hui Center of Applied Mathematics, Nankai & Tianjin University, Tianjin 300072, P. R. China
  • Received:2002-08-20 Revised:2003-07-20 Online:2004-01-18 Published:2004-01-18
  • Supported by:

    the National Natural Science Foundation of China(90205021);the Foundation of Liu Hui Center for Applied Mathematics, Nankai & Tianjin University

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 T-S wave was fed into the boundary layer to investigate its evolution. Characteristics of non-linear 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.

2010 MSC Number: 

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