Jet vectoring using synthetic jet actuators

X-L model, a whole flow-field computing model for synthetic jet actuator, which considers the actuator cavity, the exit throat, and the external flow field as a single computational region. Based on this computing model, numerical computations were performed for a speed primary jet vectored using different synthetic jet actuators.It is shown that the synthetic jet actuators can control the vector of a speed primary jet effectively and the primary jet direction can be controlled by altering the working parameters and locations of actuators. When the actuator is operated in the pull mode, the primary jet is vectored larger comparable to that of push mode, and there must be an optimal distance between the actuator exit and the primary jet, for which the largest vectoring benefit can be obtained. The frequency and velocity amplitude of the synthetic jet affect the strength of the vortex.The formation of low pressure closed circumfluence region and the entrainment of vortexes are the main reasons for vectoring a speed jet.