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设计了一种微流道中液体混合的方法,基于电磁力的作用,诱导微流道中二次流动发生,从而产生Dean涡,使流道中流体出现往复运动及流体界面的弯曲延伸,使不同流体的接触面积大大地增加,从而提高混合效率.对3种结构的工况进行了比较.建立了微流道混合系统的理论模型并进行了数值模拟,对流体混合过程进行了分析并对混合效率进行了评价.进行了验证性的试验研究,对模拟结果与试验结果进行了比较,结果相吻合.
A method of liquid mixing in microchannel is designed. Based on the action of electromagnetic force, secondary flow in the microchannel is induced to generate Dean vortex, which causes reciprocating movement of the fluid in the flow channel and bending extension of the fluid interface, The contact area is greatly increased to improve the mixing efficiency.The working conditions of the three structures are compared.The theoretical model of the micro-channel mixing system is established and numerical simulation is carried out, the mixing process is analyzed and the mixing efficiency is carried out The evaluation.A confirmatory experimental study was carried out, the simulation results and the test results were compared, the results are consistent.