【摘要】 以压电陶瓷振为激振源的自耦合射流激发器,在发射孔产生一系列平均质量流率为零的涡环,对垂直布置的主流产生复杂的相互作用,使主流实现矢量偏转。研究了自耦合射流激发器自身机理和自耦合射流使主流实现矢量偏转的实验,在实验条件下,自耦合射流使20m s流速的主流产生了最大17°的矢量偏转。更多还原

【Abstract】 The synthetic jets actuator is driven by the motion of the piezoelectric disks mounted on the wall of a sealed cavity under the orifices plate. Each of their zero net mass flux jets are synthesized by a train of vortices that are formed at the edge of the jet orifice. A detailed study of the synthetic jets and a vertical main jet flow vectoring by synthetic jet are described. The experiment indicated that the 17° vector turning of 20m/s main-jet flow are obtained by specially designed synthetic jets.更多还原