Accession Number : AD0617055

Title :   HEAT TRANSFER FROM ARGON AND XENON TO THE END-WALL OF A SHOCK TUBE,

Corporate Author : MASSACHUSETTS INST OF TECH CAMBRIDGE FLUID MECHANICS LAB

Personal Author(s) : Friedman,Harvey S. ; Fay,James A.

Report Date : MAY 1965

Pagination or Media Count : 34

Abstract : Heat transfer from argon and xenon to the end-wall of a shock tube was measured by using a thin-film heat transfer gage whose temperature rise is monitored by an infrared photocell. For the range of incident shock Mach numbers tested, between 9 and 13 in argon and 13 and 18 in xenon, partial ionization would exist behind the reflected shock wave if thermodynamic equilibrium were achieved. By extrapolation of measured ionization rates for these gases, it was concluded that no ionization occurred behind the reflected shock wave in argon but that equilibrium was achieved in xenon, at least for the period during which the heat transfer was measured. Calculations of the heat transfer, made in accordance with existing theories for the corresponding thermodynamic state of the gas, were found to be in good agreement with the experimental measurements. (Author)

Descriptors :   (*HEAT TRANSFER, RARE GASES), (*ARGON, HEAT TRANSFER), (*XENON, HEAT TRANSFER), SHOCK TUBES, AERODYNAMIC CHARACTERISTICS, CONVECTION, THERMAL RADIATION, THERMOMETERS, GAS IONIZATION, THERMODYNAMICS

Distribution Statement : APPROVED FOR PUBLIC RELEASE