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首页> 外文期刊>Journal of Molecular Liquids >Numerical study of magnetic effect on the velocity distribution field in a macro/micro-scale of a micropolar and viscous fluid in vertical channel
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Numerical study of magnetic effect on the velocity distribution field in a macro/micro-scale of a micropolar and viscous fluid in vertical channel

机译：垂直通道中微极性和粘性流体在宏观/微观尺度上对速度分布场的电磁效应的数值研究

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摘要

A theoretical and numerical study of convective heat transfer of two different types of immiscible fluids in a vertical channel in the presence of a magnetic field is presented in this paper. The study involves several applications in mechanical energy, blood and synovial fluid flow in human health, micropolar fluids contained suspended fine particles in complex rotating motion, complex microstructure under the influence of several physicochemical characteristics .... To achieve a good understanding of the complexity of this flow type a mathematical model was developed which took into account a magnetic diffusivity term in the energy balance equation and allows the appearance of some dimensionless parameters such as the material parameter (K), the Prandtl number (Pr), the mixed convection parameter (GR), the magnetic parameter (Ha) and the Eckert number (Ec). Therefore, the numerical results obtained from the model were used to assume an apparent effect of the magnetic field on linear and spin velocities within micropolar and viscous fluids. Hence these results are subject to a comparative discussion between the current studied model with a magnetic diffusivity term and other studied without a magnetic diffusivity term. (C) 2015 Elsevier B.V. All rights reserved.
机译：本文提出了在磁场作用下垂直通道中两种不同类型的不混溶流体对流换热的理论和数值研究。该研究涉及人体健康中的机械能，血液和滑液流动中的几种应用，微极性液体在复杂的旋转运动中包含悬浮的细小颗粒，在几种物理化学特征的影响下具有复杂的微观结构....以便对复杂性有一个很好的了解对于这种流动类型，开发了一个数学模型，该模型考虑了能量平衡方程中的磁扩散率项，并允许出现一些无量纲的参数，例如材料参数（K），普朗特数（Pr），混合对流参数（GR），磁参数（Ha）和埃克特数（Ec）。因此，从模型获得的数值结果被用来假设磁场对微极性流体和粘性流体中线性和自旋速度的明显影响。因此，这些结果需要在当前研究的具有磁扩散率项的模型与其他没有磁扩散率项的模型之间进行比较讨论。 （C）2015 Elsevier B.V.保留所有权利。

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