Accession Number : AD0262068

Title :   SIMULTANEOUS TRANSFER OF MOMENTUM HEAT AND MASS. PART III. EVAPORATIVE COOLING AT HIGH SPEED

Corporate Author : POLITECNICO DI TORINO (ITALY)

Personal Author(s) : JARRE,GIANNI

Report Date : APR 1961

Pagination or Media Count : 1

Abstract : The opposite effects of evaporative cooling and of aerodynamic heating at high speed are investigated. The evaporative cooling is a very effective process to strongly reduce the friction heating produced by high speeds. The wet bulb of a psychrometer describes the adiabatic case of evaporative cooling. The field of low vapour concentration is thoroughly analyzed and simple graphical methods are derived. Numerical examples illustrate the obtained results. The stability of laminar flow under evaporative cooling is eventually discussed. (Author)

Descriptors :   *AERODYNAMIC HEATING, *EVAPORATION, *GAS FLOW, *HEAT TRANSFER, ABLATION, BOUNDARY LAYER, COOLING, FLUID MECHANICS, MOLECULES, RAREFIED GAS DYNAMICS, VAPORIZATION, VAPORS

Distribution Statement : APPROVED FOR PUBLIC RELEASE