An Actively Controlled Micromixer
An Actively Controlled Micromixer
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主动控制的微混合器
DOI：
10.1115/imece1999-0309
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发表时间：
1999
期刊：
影响因子：
--
通讯作者：
M. Dahleh
中科院分区：
文献类型：
--
作者：
M. Volpert;C. Meinhart;I. Mezić;M. Dahleh
开发了一种主动混合策略，以加强通过微通道的两种流体的混合。当流经混合器主流道的流动被三组二次流道扰动时，混合得到加强。通过模拟完整的Navier-Stokes方程、Stokes方程和基于基本速度分布叠加的简单分析模型，计算了混合器内流动的数值解。当雷诺数Re=5时，解析模型与Navier-Stokes解和Stokes解定性吻合。建立了一个混合系数来定量评价不同流动形态下的混合效率。结果表明，对于两种可能的流动形态，混合增强。
An active mixing strategy has been developed to enhance mixing of two fluids through a microchannel. Mixing is enhanced when the flow through the main channel of the mixer is perturbed by three sets of secondary flow channels. Numerical solutions of the flow through the mixer are calculated by simulating the full Navier-Stokes equation, the Stokes equation, and a simple analytical model based upon the superposition of elementary velocity profiles. The analytical model agrees qualitatively with Navier-Stokes and Stokes solutions for Reynolds numbers, Re = 5. A mixing coefficient is developed to quantitatively evaluate mixing efficiency for various flow configurations. The results indicate enhanced mixing for two possible flow configurations.