Accession Number : AD0741884

Title :   Periodic Compressible Nozzle Flow Caused by Heat Addition Due to Condensation,

Corporate Author : YALE UNIV NEW HAVEN CONN DEPT OF ENGINEERING AND APPLIED SCIENCE

Personal Author(s) : Cagliostro,Dominic J. ; Wegener,Peter P.

Report Date : FEB 1972

Pagination or Media Count : 105

Abstract : Periodic, unsteady, compressible nozzle flow caused by heat addition due to condensation in the transonic region is investigated. The experiments were performed in an intermittent tube wind-tunnel. Flow with varying expansion rates, relative and specific humidities, pressures, and temperatures were studied. Measurements were made by pressure and temperature recordings, streak interferograms and high-speed shadowgraph movies. A dimensional analysis that relates the frequency of the cyclic flow to the supply conditions and cooling rate was performed, and correlated with the measurements. Based on a linear approximation, possible solutions of the equations of motion for steady, transonic, diabatic, inviscid flow in the throat region of a nozzle are discussed.

Descriptors :   (*NOZZLE GAS FLOW, TRANSONIC CHARACTERISTICS), FLOW FIELDS, WIND TUNNEL MODELS, HEAT FLUX, FLOW VISUALIZATION, STATISTICAL ANALYSIS, EQUATIONS OF MOTION

Subject Categories : Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE