Accession Number : ADA014396

Title :   Mass Entrainment by Hypermixing Jets.

Descriptive Note : Final technical rept. Mar 74-Jan 75,

Corporate Author : BELL AEROSYSTEMS CO BUFFALO N Y

Personal Author(s) : Salter,Graham R.

Report Date : JUN 1975

Pagination or Media Count : 94

Abstract : An experimental investigation has been conducted to evaluate the mass entrainment characteristics of seven hypermixing nozzles, one rectangular convergent nozzle, and one circular convergent nozzle, over the primary to ambient pressure ratio range of 1.52 to 2.43. Four of the hypermixing nozzles had an exit angle of 45 degrees and individual element aspect ratios of 12, 8, 6, and 4. The remaining three, which all had individual element aspect ratios of 6, had nozzle exit angles of 30, 60, and 75 degrees. The rectangular nozzle aspect ratio was 48. Mass entrainment characteristics were measured for each nozzle at five pressure ratios and four downstream locations.

Descriptors :   *Jet mixing flow, *Thrust augmentation, *Entrainment, Ejectors, Subsonic characteristics, Nozzles, Test methods, Test facilities, Chambers, Assessment, Walls, Turbulent flow, Aspect ratio, Geometric forms, Pressure, Exits, Hot wire anemometers, Velocity, Mathematical models

Subject Categories : Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE