Accession Number : AD0754225

Title :   Velocity Measurements in Partially Confined Rectangular Jets,

Corporate Author : SYSTEMS RESEARCH LABS INC DAYTON OHIO

Personal Author(s) : Eastlake,Charles N. , II

Report Date : SEP 1972

Pagination or Media Count : 40

Abstract : An experimental investigation has been made of the mean flow characteristics of air jets issuing from rectangular outlets into a still atmosphere. Both nozzles and flat-plate orifices having aspect ratios (l/d) of 40 and 100 have been tested. Free jet data is compared with data from the jets confined by plane walls parallel to the jet axis on only two sides of the jet. Considerable differences in half-velocity widths and peak velocity decay are found to be caused by this partial confinement. Jet momentum flux and mass entrainment are less seriously affected. (Author)

Descriptors :   (*JET MIXING FLOW, VELOCITY), TURBULENCE, ASPECT RATIO, TWO DIMENSIONAL FLOW, ORIFICES, TEST METHODS, MOMENTUM, MASS TRANSFER

Subject Categories : Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE