In this study, a micromixer with Koch fractal under electric field effect is simulated, and we studied the effects of different fractal parameters on the mixing process. These parameters include the number of fractals, the spacing of fractals, the geometric dimensions of fractals and the flow analysis of the fluid in the microchannels. Simulation displays that increasing the number of electrode pairs and increasing the fractal size are both beneficial to fluid mixing, and the optimal fractal spacing is 0.75 mm. The results show that the Koch fractal structure and the electric field effect can not only improve the flow state of the fluid effectively, but also increase the mixing index of the fluid.

本研究模拟了电场效应下具有科赫分形的微混合器，研究了不同分形参数对混合过程的影响。这些参数包括分形的数量、分形的间距、分形的几何尺寸和微通道中流体的流动分析。仿真表明，增加电极对数和增大分形尺寸都有利于流体混合，最佳分形间距为0.75 mm。结果表明，Koch分形结构和电场效应不仅可以有效改善流体的流动状态，而且可以提高流体的混合指数。