Accession Number : AD0478063

Title :   NON-EQUILIBRIUM CONDENSATION OF CARBON DIOXIDE IN SUPERSONIC NOZZLES,

Corporate Author : MASSACHUSETTS INST OF TECH CAMBRIDGE GAS TURBINE LAB

Personal Author(s) : Duff,Karl M.

Report Date : JAN 1966

Pagination or Media Count : 179

Abstract : Experiments involving the condensation of CO2 in three supersonic nozzles were conducted. Results indicate that moisture formation is not abrupt as in the case of pure water vapor, but is more gradual. The stream remains considerably super-saturated downstream of initial condensation. Rates of expansion, as determined by nozzle geometry, have a marked influence upon the degree of supersaturation obtained prior to condensation. Nucleation and drop growth theory, as applied in this study, will reasonably predict the conditions at onset of condensation provided small corrections to flat film liquid surface tension are applied. This correction amounts to an increase of between 17% and 38% in flat film liquid values, depending upon values of thermal and mass accommodation coefficients which are applied. (Author)

Descriptors :   (*SUPERSONIC NOZZLES, CARBON DIOXIDE), (*CARBON DIOXIDE, CONDENSATION), NUCLEATION, NOZZLE GAS FLOW, BOUNDARY LAYER, PRESSURE, STAGNATION POINT, DENSITY, SHOCK WAVES, THEORY, CONTAMINATION, ENTHALPY, SPECIFIC HEAT, TEST EQUIPMENT, MEASUREMENT, MOISTURE, MOMENTUM, LAMINAR BOUNDARY LAYER, TURBULENT BOUNDARY LAYER, ONE DIMENSIONAL FLOW, INTERFEROMETERS, TWO DIMENSIONAL FLOW, COMPUTER PROGRAMMING

Subject Categories : Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE