THE STABILITY OF SELECTED BOUNDARY-LAYER PROFILES

Abstract

An investigation of the stability characteristics of infinitesimal disturbances in selected laminar boundary-layer profiles was conducted. The re sults of the investigation give quantitative in dications of the influence on boundary-layer stability of foreign gas injection, applied magnetic fields, and applied external shear. It is quantitatively shown that injected gases of large molecular weight and diameter may result in stabilization, whereas the light, small-diameter gases are generally destabilizing except for large values of the wall-to-free-stream temperature ratio. In addition, it is shown that a moderate external shear yields only percentage changes in the stability characteristics, whereas an applied magnetic field can produce order of magnitude changes in the stability.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1963
Accession Number
AD0406188

Entities

People

  • Gerhard Heiche
  • John O. Powers
  • S. F. Shen

Organizations

  • Naval Ordnance Laboratory

Tags

Communities of Interest

  • Air Platforms
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Aeronautical Engineering
  • Air Force
  • Asymptotic Series
  • Boundary Layer
  • Boundary Layer Flow
  • Computational Fluid Dynamics
  • Computational Science
  • Differential Equations
  • Fluid Dynamics
  • Fluid Mechanics
  • Jet Propulsion
  • Mechanical Engineering
  • Munitions
  • Ordnance Laboratories
  • Physics Laboratories
  • Reynolds Number
  • United States

Fields of Study

  • Physics

Readers

  • Control Systems Engineering.
  • Fluid Dynamics.
  • Pulsed Power and Plasma Physics.