电磁力作用下微型管道中流体流动与混合的实验研究

设计了一种使微管道中导电液体得到混合的方案，利用电场和磁场耦合作用下产生的电磁力作用，使流体产生往复运动及流体界面的弯曲延伸，不同流体的接触面积大大增加，从而提高混合效率。在此基础上搭建了实验平台，利用Micro—PIV系统进行了详细的实验研究，得到了微管道中流体流动的速度场，并对不同电极排列方式下的流场进行分析比较。在实验基础上进行数值验证，并对不同工况下的混合效率进行了分析。结果表明：通过电磁力的扰动作用，确实能有效地提高微管道中流体的混合效率。

Experimental studies for the fluid flow and mixing Under the action of electromagnetic force in the micro-channel

This paper introduces a solution of mixing conductive liquids in the micro-channel, using the generated electromagnetic force caused by the effect of electric and magnetic fields cou- pling. The solution improves the mixing efficiency of fluids by increasing the contact area, which is caused by the reciprocating motion and the interface extending of the different fluids. Then the experimental platform is established and the detailed experimental studies are carried out using the micro-PlV system. The velocity field of fluid flow in the micro channel is got. The flow fields of different electrode arrangements are analyzed and compared. On the basis of experiment, the numerical simulation is carried out, and the mixing efficiencies of the different conditions are analysed. The results show that under the disturbance of electromagnetic force, the mixing efficiency of the fluids in the micro channel can be improved.