Tollmien-Schlichting/Vortex Interactions in Compressible Boundary Layer Flows

Abstract

The weakly nonlinear interaction of oblique Tollmien-Schlichting waves and longitudinal vortices in compressible, high Reynolds number, boundary- layer flow over a flat plate is considered for all ranges of the Mach number. The interaction equations comprise of equations for the vortex which is indirectly forced by the waves via a boundary condition, whereas a vortex term appears in the amplitude equation for the wave pressure. The downstream solution properties of interaction equations are found to depend on the sign of an interaction coefficient. Compressibility is found to have a significant effect on the interaction properties; principally through its impact on the waves and their governing mechanism, the triple-deck structure. It is found that, in general, the flow quantities will grow slowly with increasing downstream coordinate; i.e. in general, solutions do not terminate in abrupt, finite- distance 'break-ups'.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1993
Accession Number
ADA271852

Entities

People

  • Nicholas D. Blackaby

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Amplitude
  • Boundary Layer
  • Boundary Layer Flow
  • Computational Fluid Dynamics
  • Differential Equations
  • Engineering
  • Equations
  • Flow
  • Fluid Dynamics
  • Fluid Mechanics
  • Hydrodynamics
  • Layers
  • Mach Number
  • Mechanics
  • Reynolds Number
  • Three Dimensional
  • Viscous Flow

Fields of Study

  • Physics

Readers

  • Fluid Dynamics.
  • Fluid Mechanics and Fluid Dynamics.