【作者】 刘鹏； 陈耀慧； 张辉； 周本谋；

【Author】 LIU Peng CHEN Yao-hui ZHANG Hui ZHOU Ben-mou (Key Lab.of Transient Physics,Nanjing University of Science and Technology,Nanjing 210094,China)

【机构】 南京理工大学瞬态物理重点实验室；

【摘要】 利用电磁力改变流体边界层的结构,是流体主动控制的方法之一。电磁场在导电的流体边界层上产生的电磁力具有明显的分布特征,深入认识这种特征可以更加有效地改变边界层的结构,控制边界层的流动分离, 从而有效地实现对流场的控制。基于电磁场和流体力学的基本方程,对置于弱电解质溶液中电磁激活板周围的电磁场及产生的电磁力进行了数值模拟,了解其分布特征及其分布规律；并通过试验测试分析,揭示了流体边界层上电磁力对翼型绕流控制过程的动态特征和消涡减阻作用。更多还原

【Abstract】 By the means of electromagnetic forces,the structure of the flow boundary layer may be modified,which is one of the active methods for flow controlling.Through recognizing the details of the characteristics,the structure of the flow boundary layer may be modified and the flow separation from the surface may be controlled effectively.Based on the basic equations of electromagnetic field and hydrodynamics,the distributing characteristics of the electromagnetic field and the electromagnetic force on the surface of electro-magnetic actuator have been obtained by numerical simulations.The flow around hydrofoil modification processing,the controlling effects of vortex suppression and drag reduction have been conducted and discussed in evidence.更多还原