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Microfluidic separation process by the Soret effect in biological fluids

机译:Soret效应在生物流体中的微流体分离过程

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In this article the thermophysical and transport properties of mixtures composed of glucose and sucrose in dimethylsulfoxide (DMSO) are determined. The studied mass concentrations are 5%, 10%, 15%, 20% and 25% of glucose or sucrose in DMSO at an average temperature of 25°C. The properties studied experimentally are the dynamic viscosity, density, mass and thermal expansion coefficient and thermodiffusion coefficient. The thermogravitational technique in flat configuration is used in order to obtain the thermodiffusion coefficients. Once these properties are known, the work is focused on the numerical study of applying a temperature gradient in microdevices in order to optimize the extraction of DMSO using the CFD Ansys Fluent software. The results show an improvement even of 35% on microfluidic separation techniques that are based on a purely diffusive regime.
机译:在本文中,测定了由葡萄糖和蔗糖组成的混合物在二甲基亚砜(DMSO)中的热物理性质和传输性质。研究的质量浓度为平均温度25°C下DMSO中葡萄糖或蔗糖的5%,10%,15%,20%和25%。实验研究的性质是动态粘度,密度,质量和热膨胀系数以及热扩散系数。为了获得热扩散系数,使用了平面构造的热引力技术。一旦了解了这些属性,便将工作重点放在在微型设备中应用温度梯度以优化使用CFD Ansys Fluent软件提取DMSO的数值研究。结果表明,基于纯扩散方案的微流体分离技术甚至可以提高35%。

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