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分别对单列和多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,通过对其温度场分布和掺混过程进行分析,探讨激励器阵列进行掺混控制的机理.在研究过程中,考虑了相邻合成射流的影响.结果表明,激励器的采用使得整个流场的非定常性增强、湍流度增大,从而增强了共轴射流及其与周围流体间的掺混;两列激励器较单列激励器相比,前者具有更强的控制能力,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 single-column and multi-column synthetic jet actuators were carried out respectively. The distribution of the temperature field and the mixing process were analyzed to investigate the hybrid control of the actuator arrays In the process of research, the influence of adjacent synthetic jets is considered.The results show that the use of exciters enhances the unsteady flow field and increases the turbulence, which enhances the coaxial jet and its interaction with the surrounding fluid Compared with single-column exciters, the former has more control ability, which is mainly due to the more significant force of adjacent synthetic jet than single synthetic jet.