Boundary-Layer Receptivity Due to a Wall Suction and Control of Tollmien-Schlichting Waves

Abstract

A numerical study of the generation of Tollmein-Schlichting waves due to the interaction between a small free-stream disturbance and a small localized suction slot on an otherwise flat surface has been carried out using finite-difference methods. The nonlinear steady flow is of the viscous-inviscid interactive type while the unsteady disturbed flow is assumed to be governed by the Navier-Stokes equations linearized about this flow. Numerical solutions illustrate the growth of decay of the T-S waves generated by the interaction between the freestream disturbance and the suction slot, depending on the value of the scaled Strouhal number. An important result of this receptivity problem is the numerical determination of the amplitude of the Tollmein-Schlichting waves and the demonstration of the possible active control of the growth of Tollmein-Schlichting waves.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1990
Accession Number
ADA227795

Entities

People

  • P. W. Duck
  • R. J. Bodonyi

Tags

Communities of Interest

  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Boundary Layer
  • Computational Fluid Dynamics
  • Computational Science
  • Difference Equations
  • Engineering
  • Equations
  • Fluid Dynamics
  • Fluid Mechanics
  • Free Stream
  • Geometry
  • Hydrodynamics
  • Mechanics
  • Navier Stokes Equations
  • Pressure Distribution
  • Steady Flow
  • Strouhal Number
  • Unsteady Flow

Fields of Study

  • Physics

Readers

  • Fluid Mechanics and Fluid Dynamics.