STUDIES OF ELECTRICAL CHARACTERISTICS OF GASDYNAMIC BOUNDARY LAYERS IN SEEDED DIATOMIC GASES

Abstract

Calculations are presented of the excess boundary-layer voltage drop attributable to the conduction of current through a thermal boundary layer on the electrodes of an MHD accelerator operating with seeded air or nitrogen, using the two-temperature model of Kerrebrock. For a laminar boundary layer, the excess boundary-layer voltage drop is found to be a linear function of pressure, relatively insensitive to free-stream temperature and seed fraction, and larger for air than for nitrogen. Experiments conducted in a shock tube showed an asymmetry in the voltage distribution for seeded air, with the cathode drop approximately 30 v and the anode drop approximately 10 v.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1968
Accession Number
AD0671528

Entities

People

  • E. E. Goins
  • Wendell Norman

Organizations

  • Arnold Engineering Development Complex

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Force
  • Boundaries
  • Boundary Layer
  • Conductivity
  • Current Density
  • Electric Fields
  • Electrodes
  • Electron Gas
  • Electrons
  • Flow
  • Free Stream
  • Geometry
  • Laminar Boundary Layer
  • Mach Number
  • Shock Tubes
  • Static Pressure
  • Thermal Boundary Layer

Fields of Study

  • Physics

Readers

  • Fluid Dynamics.
  • Plasma Physics.