design and manufacturing of jet to free stream simulator to experimental study of interaction of oblique jet in crossflow

the study of interactions of jet into cross flow at different longitudinal and transverse angles ofjet was studied. the following components were designed and constructed: a low velocity windtunnel to produce the uniform flow, a flat plate with a traverse injection system to simulate the jetinjection, and a spatial rake to measure the total pressure. the tests were carried out atlongitudinal (α) and transverse angles (β) of 60, 75, and 90 degrees and a velocity ratio of 2.5.the free stream and jet stream velocities were set at 20 and 50 meters per second and wereconstant for all the tests. results showed that flow field development could be controlled throughinjecting oblique jets. decreasing β caused the following results: 1) improved the effects ofinjection along the mixing direction, 2) increased jet penetration along the plate width direction,and 3) increased the flow wake. in addition, decreasing α led to a slight increase downstream ofthe nozzle, but failed to produce a significant change in to total pressure coefficient.