抄録
In this study, a synthetic jet array which can be actuated individually at the different phase from those of adjacent synthetic jets is employed. Influence of the phase difference on reattachment process in the low Reynolds number flow over a backward facing step is discussed. Flow visualization and measurement of near-wall flow using the micro flow sensor are conducted. In counter-phase injection, the excitation of separating shear layer and the transverse vortex structure are different from those in common-phase injection. It is also found from phase-averaged forward flow fraction that stable control of the reattachment process can be performed by the synthetic jets with the counter-phase injection.
