Accession Number:

AD0600798

Title:

BASIC RESEARCH ON GAS FLOWS THROUGH ELECTRIC ARCS-HOT GAS CONTAINMENT LIMITS

Descriptive Note:

Corporate Author:

XEROX ELECTRO-OPTICAL SYSTEMS PASADENA CA

Report Date:

1964-03-01

Pagination or Media Count:

64.0

Abstract:

Extensive measurements in a cascade type arc research apparatus were carried out with four gases hydrogen, helium, ammonia, and argon, covering both the inlet region and the fully developed region of the coaxial flow discharge. The inlet gas heater region results for three gases were compared with the Stine-Watson first order theory. To estimate the ultimate technical limits of arc gas heater performance the well known approximate theories for the fully developed arc column Parabola and Bessel Models were extended to include radiation and, for the high current regime the self-magnetic pressure gradient. Hot gas containment limits highest radially averaged outlet enthalpy vs. pressure were calculated for air, for a range of allowable wall heat loads 0.1-10 kwsq cm. It is concluded that 1 Heat loads from mechanisms other than the simple hot gas containment e.g. electrode heat loads, local secondary arcs, etc. have so far limited the enthalpy pressure values achieved. 2 Gas heater performance substantially above the 1961 state of the art curve appears technically possible, with optimum designs.

Subject Categories:

  • Physical Chemistry
  • Plasma Physics and Magnetohydrodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE