Accession Number:

AD0671528

Title:

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

Descriptive Note:

Final rept. Jul 1966-Jan 1968

Corporate Author:

ARNOLD ENGINEERING DEVELOPMENT CENTER ARNOLD AFB TN

Personal Author(s):

Report Date:

1968-06-01

Pagination or Media Count:

71.0

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.

Subject Categories:

  • Plasma Physics and Magnetohydrodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE