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对多排列合成射流激励器控制共轴射流掺混流场进行了详细的二维非定常数值模拟。结果表明,激励器的采用可以增强共轴射流的掺混效果;相邻合成射流产生涡对在孔口处经过相互耦合,形成了更强的旋涡对,并以一种新生合成射流作用周围流场;两排激励器较单排激励器相比,前者控制掺混能力更强,这主要是由于相邻合成射流比单个合成射流有着更显著作用力的缘故。
The two-dimensional unsteady numerical simulations of co-axial jet flow in a multi-array synthetic jet actuator were carried out. The results show that the use of exciters can enhance the mixing effect of coaxial jet. The vortex pairs generated by the adjacent synthetic jets are coupled to each other through the orifices to form a stronger vortex pair, and a new synthetic jet acts as the peripheral flow Field. Compared with single-row exciters, the two-row exciters are more capable of controlling the blending ability than the single-row exciters, mainly because the adjacent synthetic jets have a more significant force than the single synthetic jet.