Accession Number : AD0832521

Title :   AN EXPERIMENTAL INVESTIGATION OF A THREE-DIMENSIONAL COANDA NOZZLE.

Descriptive Note : Master's thesis,

Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING

Personal Author(s) : Olsen, Robert E.

Report Date : MAR 1968

Pagination or Media Count : 82

Abstract : A web was placed in the divergent section of a three-dimensional Coanda-effect nozzle, dividing it into four channels. The effects of the web area, ratio of the channel wall length to setback diameter, pressure ratio Po/Pa, and setback ratio d/b on the entrainment of a compressible fluid jet in a specific channel were experimentally determined. A limiting range of web reduction values was determined below which the main jet could not be switched from one channel to another by parallel secondary injection. An optimum d/b of 6 was determined, where switching was possible for nearly all Po/Pa tested. (Author)

Descriptors :   *THREE DIMENSIONAL FLOW), (*NOZZLE GAS FLOW, COANDA EFFECT, COMPRESSIBLE FLOW, JET MIXING FLOW, BOUNDARY LAYER, WALLS, PRESSURE, VORTICES, SECONDARY FLOW, INJECTION, ATTACHMENT, DATA PROCESSING, DEFLECTION, THESES.

Subject Categories : Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE