NONEQUILIBRIUM ELECTRON TEMPERATURE EFFECTS IN WEAKLY IONIZED STAGNATION BOUNDARY LAYERS

Abstract

An electron energy equation is formulated for weakly ionized stagnation boundary layers (degree of ionization in the order of 0.1% or less) over highly cooled surfaces. Only the cases of moderately negative wall potential with respect to the plasma, where the ratio of the electron to ion current densities is between about 1/10 to 10, are considered. The equation is simplified by taking advantage of the fact that the electron energy equation is rather insensitive to the detailed variation of the electron concentration profile. A solution of the simplified electron energy equation is obtained analytically for the cases where the electron temperatures are not in equilibrium with the neutral gas temperatures. The effects of nonequilibrium electron temperatures on the electrical characteristics of the boundary layer are then analyzed.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1963
Accession Number
AD0405937

Entities

People

  • James F. Mullen
  • Paul M. Chung

Organizations

  • The Aerospace Corporation

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Force
  • Boundary Layer
  • Boundary Layer Flow
  • Charged Particles
  • Current Density
  • Digital Computers
  • Electric Fields
  • Electron Energy
  • Electrons
  • Energy Transfer
  • High Temperature
  • Particle Collisions
  • Surface Temperature
  • Temperature Gradients
  • Thermal Boundary Layer
  • Thermal Conductivity
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Fluid Dynamics.
  • Plasma Physics.

Technology Areas

  • Microelectronics