EFFECTS OF FOREIGN GAS INJECTION ON LAMINAR BOUNDARY LAYER STABILITY AT LOW MACH NUMBERS.

Abstract

The stability characteristics of laminar boundary layer profiles including foreign gas injection were evaluated by solving the disturbance equations for the eigenvalues which define the minimum critical Reynolds number for neutral stability. The profiles utilized demonstrate the differences which accrue from using light and heavy molecular weight gases as the injectant. Results obtained by asymptotic procedures for Mach numbers less than 1.3 show that the heavier gas (carbon tetrachloride) resulted in markedly more stable boundary layers than a lighter gas (helium). (Author)

Document Details

Document Type
Technical Report
Publication Date
Sep 12, 1966
Accession Number
AD0646747

Entities

People

  • John O. Powers
  • Lorenzo M. Albacete

Organizations

  • Naval Ordnance Laboratory

Tags

DTIC Thesaurus Topics

  • Boundaries
  • Boundary Layer
  • Boundary Layer Control
  • Carbon Tetrachloride
  • Eigenvalues
  • Equations
  • Fluid Mechanics
  • Laminar Boundary Layer
  • Layers
  • Mach Number
  • Molecular Weight
  • Reynolds Number

Fields of Study

  • Physics

Readers

  • Combustion and Flow Dynamics.
  • Fluid Mechanics and Fluid Dynamics.
  • Systems Analysis and Design