Ion and Electron Distributions in the Boundary Layer of Hypersonic Vehicles for Chemical Non-Equilibrium Flow. Part 1. Aerodynamics and Numerical Results

Abstract

Flows over non-ablating hypersonic vehicles are considered when all electrons are produced by aerodynamic heating in the boundary layer. Detailed calculations of the ion and electron distributions are presented for a vehicle with a conical nose and a semivertex angle of 10 deg, for Mach numbers 8 and 10 at sea level. Except for a small region at the nose, the boundary layer is turbulent. Diffusion of electrons with respect to the ions and neutrals is considered and ambipolar diffusion is found to occur across most of the boundary layer only at large ionelectron densities.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1971
Accession Number
AD0735318

Entities

People

  • Irvin Pollin

Organizations

  • Harry Diamond Laboratories

Tags

Communities of Interest

  • Advanced Electronics
  • Materials and Manufacturing Processes
  • Weapons Technologies

DTIC Thesaurus Topics

  • Aerodynamic Heating
  • Boundary Layer
  • Charged Particles
  • Chemical Kinetics
  • Diffusion
  • Diffusion Coefficient
  • Electron Density
  • Electrons
  • Fluid Dynamics
  • Gas Flow
  • Hypersonic Vehicles
  • Layers
  • Mach Number
  • Physics Laboratories
  • Sea Level
  • Thermodynamic Properties
  • Turbulent Boundary Layer

Fields of Study

  • Physics

Readers

  • Fluid Mechanics and Fluid Dynamics.
  • Plasma Physics.

Technology Areas

  • Hypersonics
  • Hypersonics - Hypersonic Boundary Layers
  • Hypersonics - Hypersonic Flight
  • Microelectronics