Threedimensional jet issuing from the cruciform nozzle. I  Mean flow properties
Abstract
The mean flow properties of a threedimensional jet issuing from a cruciform nozzle with a sufficiently large value of the aspect ratio were measured. The mean velocity profile shows the existence of a saddleback shaped velocity defect region on the y = 0 and z = 0 slices of the upstream region. It is confirmed that the entire mean velocity profile maintains a crisscross shape up to the downstream cross section of x/d = 150, where d is the jet nozzle width. The velocity scale decays as (x/d) to the 0.46 in the region beyond x/d = 75. The rate of the decay is smaller than those of the twodimensional and the axisymmetric jets. The similarity of mean velocity profile on the representative slices is valid on the y = z slice in the region beyond x/d = 50, and on the z = 0 slice in the region beyond x/d = 75.
 Publication:

JSME International Journal Series B
 Pub Date:
 June 1985
 Bibcode:
 1985JSMEB..28.1062F
 Keywords:

 Flow Geometry;
 Jet Flow;
 Nozzle Flow;
 Three Dimensional Flow;
 Flow Distribution;
 Momentum;
 Pressure Distribution;
 Velocity Distribution;
 Wind Tunnel Tests;
 Fluid Mechanics and Heat Transfer