Abstract
A synthetic jet array which can be actuated individually with different injection velocities is employed as an actuatorfor a control of flow separation. In the present study, the effect of different injection velocity of the jet array fromthose of adjacent jets on transverse vortex structure in the low Reynolds number flow over a backward facing step isdiscussed. The transverse vortex is generated from separating shear layer by applying synthetic jets to backwardfacing step flow. Measurement of wall shear stress by micro flow sensor and flow visualization were conducted onsapanwise and streamwise direction. The results show that different injection velocity in jet array induces differenceof propagation velocity of transverse vortices and distorted vortex structure.
