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摘要
This paper aims at studying on the mixing performance of micromixer with Koch fractal microchannel by numerical simulation. Setting up obstacles in the microchannel is an effective way to improve the mixing efficiency, and changing the shape of the obstacle based on the fractal principle can improve the chaotic convection in the microchannel, it can make the performance of the micromixer much better. With different parameters of the fractal obstacle, the effect on the mixing efficiency of the micromixer is different. This study proofs the effect on the mixing efficiency with different heights, distances, numbers and configurations of the obstacles. The number of the obstacles and the distance between the two fractal obstacles have a significant effect on the mixing efficiency. However, the effect of the different configurations on the mixing efficiency is negligible. Comparing the effect with different parameters, with the optimal layout of the obstacles in the microchannel can be obtained based on the Koch fractal principle. With different Res, it can make the mixing efficiency of the micromixer more than 90%. Due to its outstanding mixing performance, fractal micromixer has potential application value in chemical engineering and biochemistry.
- 出版日期2018-10
- 单位辽宁工业大学
