Accession Number : AD0663417

Title :   A STUDY OF PENETRATION OF A LIQUID INJECTANT INTO A SUPERSONIC FLOW,

Corporate Author : AEROSPACE CORP EL SEGUNDO CALIF LAB OPERATIONS

Personal Author(s) : Horn,K. P. ; Kolpin,M. A. ; Reichenbach,R. E.

Report Date : OCT 1967

Pagination or Media Count : 39

Abstract : The paper reports a study of normal and lateral spray penetration for small diameter, high pressure, liquid jets issuing at an angle to a uniform supersonic stream. The experimental program described was carried out in a 4-in. by 4-in. blow down supersonic wind tunnel. The flow field is observed by means of a schlieren system, and the spray distribution is indicated by the light scattered by the liquid droplets. The data on normal penetration, in good agreement with data inferred from other investigations, indicate that a single-parameter correlation exists between the properly nondimensionalized penetration height and the injection pressure ratio. Injecting the coolant at a forward angle to the flow produces no substantial change in the penetration height. The data on lateral penetration show the spray width behind the jet to be proportional to the jet diameter with only a weak dependence on the injection pressure ratio. Analytical models proposed by previous investigators are critically examined in light of the results. No single model leads to a proper scaling law for both normal and lateral penetration. (Author)

Descriptors :   (*LIQUID JETS, PENETRATION), (*JET MIXING FLOW, *SUPERSONIC FLOW), SPRAYS, FLOW FIELDS, FLOW VISUALIZATION, INJECTION, SUPERSONIC WIND TUNNELS

Subject Categories : Aerodynamics
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE