Numerical simulation and mechanism study of the interaction of adjacent synthetic jet actuators

Modeling a blowing/suction type boundary for synthetic jet actuator, it considers the actuator cavity, exit nozzle and exterior flow field as a single computational region. Then the adjacent synthetic flow field is numerical simulated and mechanism studied in different cases (phase, amplitude and frequency). It shows that the adjacent synthetic jet flow field is affected by the phase-difference, amplitude and frequency of two actuators, and the synthetic jet is asymmetric and turning when they are working differently. The main reasons result with the asymmetry and the interaction between the two adjacent synthetic jets, leading to the formation of low pressure closed circumfluence region, which is also called entrainment field, and the synthetic jet turns to the region where the pressure is lower and the vorticity magnitude is higher.