Accession Number : AD0720818

Title :   Irregular Refraction of Strong Shock Waves by a Wedge of Hot Gas.

Descriptive Note : Final rept.,

Corporate Author : AEROSPACE RESEARCH LABS WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Skifstad,James G.

Report Date : DEC 1970

Pagination or Media Count : 46

Abstract : A theoretical model for the irregular refraction of a plane shock wave by a wedge of hot gas was developed to determine the attenuation of the incident shock by the hot gas. The analysis was based on the assumption that the entire flow field is pseudo-stationary. Computations were made for a wedge half-angle of 5 degrees, Mach numbers from 3 to 9, and sound-speed ratios from 2 to 6. The results showed the Mach Number of the transmitted shock to be some 10 to 20 per cent lower than that for normal refraction at the same Mach number and with the same sound speed ratio. The difference was interpreted as being due to the attenuation of the incident shock by the expansion wave behind the shock system. (Author)

Descriptors :   (*RAREFIED GAS DYNAMICS, *SHOCK WAVES), AERODYNAMIC CHARACTERISTICS, FLOW FIELDS, GASES, SPECIFIC HEAT

Subject Categories : Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE