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首页> 外文会议>IEEE International Conference on Nano/Micro Engineered and Molecular Systems >A novel design of passive split and recombination micromixer with trapezoidal zigzag channels
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A novel design of passive split and recombination micromixer with trapezoidal zigzag channels

机译：具有梯形之字形通道的无源拆分和混合微混合器的新颖设计

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摘要

In this paper, we proposed a novel passive micromixer to provide effective mixing performance even at very low Reynolds number (Re). The micromixer consists of trapezoidal channels that facilitate the mixing between top-fluid and bottom-fluid. In addition, the zigzag arrangement of trapezoidal channels creates transversal flows, thus enhancing the mixing in transversal direction. The micromixer also creates high distortion of fluid streams based on chaotic advection, producing very high mixing efficiency. We conducted numerical study to evaluate mixing performance of our micromixer using COMSOL Multiphysics based on Finite Element Method. The simulation results indicated that the micromixer has a high mixing efficiency over 81% for an entire range of Reynolds number from 0.1 to 80. A mixing efficiency over 90% was achieved when Re ≤ 0.9 and Re ≥ 20. When operating with Re = 20, our micromixer achieved a mixing efficiency that are 4.07 and 5.58 times higher than those of 3-split rhombic micromixer and T-shaped micromixer. Furthermore, our micromixer has a small footprint, which is advantageous to integrate into various microfluidic systems.
机译：在本文中，我们提出了一种新型的被动式微混合器，即使在非常低的雷诺数（Re）下也能提供有效的混合性能。微型混合器由梯形通道组成，可促进顶部流体和底部流体之间的混合。另外，梯形通道的锯齿形布置产生横向流动，从而增强了横向方向上的混合。微型混合器还基于混沌对流产生高变形的流体流，从而产生非常高的混合效率。我们进行了数值研究，以基于有限元方法的COMSOL Multiphysics评估我们的微混合器的混合性能。仿真结果表明，该微型混合器在雷诺数从0.1到80的整个范围内具有超过81％的高混合效率。当Re≤0.9和Re≥20时，混合效率达到90％以上。 ，我们的微混合器的混合效率分别是3分割菱形微混合器和T形微混合器的4.07和5.58倍。此外，我们的微混合器占地面积小，有利于集成到各种微流体系统中。

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