Nonlinear Instability of Hypersonic Flow Past a Wedge

Abstract

The nonlinear stability of a compressible flow past a wedge is investigated in the hypersonic limit. The analysis follows the ideas of a weakly nonlinear approach as first detailed by F.T. Smith (1979). Interest is focussed on Tollmein-Schlichting waves governed by a triple deck structure and it is found that the attached shock can profoundly affect the stability characteristics of the flow. In particular, it is shown that nonlinearity tends to have a stabilising influence. The nonlinear evolution of the Tollmein- Schlichting mode is described in a number of asymptotic limits which were first identified by Cowley and Hall (1990) in their linearised account of the current problem.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1991
Accession Number
ADA240685

Entities

People

  • Andrew P. Bassom
  • Sharon O. Seddougui

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Acoustic Waves
  • Boundary Layer
  • Coefficients
  • Computational Fluid Dynamics
  • Crystal Lattice Vibrations
  • Dispersion Relations
  • Engineering
  • Equations
  • Fluid Dynamics
  • Fluid Mechanics
  • Heat Transfer
  • Mechanics
  • Nonlinear Analysis
  • Reynolds Number
  • Three Dimensional
  • Two Dimensional
  • Waves

Fields of Study

  • Mathematics

Readers

  • Calculus or Mathematical Analysis
  • Fluid Dynamics.
  • Fluid Mechanics and Fluid Dynamics.

Technology Areas

  • Hypersonics
  • Hypersonics - Hypersonic Boundary Layers