低雷诺数翼型绕流的电磁控制

Electro-magnetic control of the flow past a foil at a low Reynolds number

对低雷诺数不可压翼型绕流在Lorentz力（电磁力）作用下的流场变化情况进行了实验探讨。发现当施加的Lorentz力与翼型表面流向相同时，其表面流体的分离被抑制，从而使尾流涡消失，且翼型阻力减小而升力增加；当Lorentz力与流向相反时，则其受阻力变大而升力降低。

The influence of Lorentz force on the flow past a foil at a low Reynolds number has been investigated experimentally. Our results show that, when the Lorentz force is applied with the same direction of the flow of the foil upper surface, the separation point has been suppressed and vortex streets behind the foil disappeared foil drag force and increase of lift force. However, when the opposite Lorentz force is applied, lift decreases. , resulting in the decrease of the drag force increases, and