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首页> 外文期刊>International Journal of Heat and Mass Transfer >Non-similar solution for natural convective boundary layer flow of a nanofluid past a vertical plate embedded in a doubly stratified porous medium
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Non-similar solution for natural convective boundary layer flow of a nanofluid past a vertical plate embedded in a doubly stratified porous medium

机译：纳米流体自然对流边界层流过嵌入双层复层多孔介质中的垂直板的非相似解

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摘要

This article studies the effects of thermal and mass stratification on natural convection boundary layer flow over a vertical plate embedded in a porous medium saturated by a nanofluid. The plate is maintained at a uniform and constant wall temperature, concentration and nanoparticle volume fraction. The effects of Brownian motion and thermophoresis are incorporated into the model for nanofluids. In addition, the thermal energy equations include regular diffusion and cross-diffusion terms. A suitable coordinate transformation is introduced, and the obtained system of non-similar, coupled and nonlinear partial differential equations are solved by the Keller-box method. The effect of the Brownian motion parameter, thermophoresis parameter, modified Dufour number, Dufour-solutal Lewis number, thermal and mass stratification parameters on the non-dimensional velocity, temperature, concentration, nanoparticle volume fraction, heat and mass transfer rates at the plate are discussed and displayed graphically.
机译：本文研究了热分层和质量分层对自然对流边界层在垂直平板上流动的影响，该垂直平板埋置在被纳米流体饱和的多孔介质中。将板维持在均匀且恒定的壁温，浓度和纳米颗粒体积分数。布朗运动和热泳的影响被纳入到纳米流体的模型中。另外，热能方程式包括规则扩散和交叉扩散项。引入合适的坐标变换，并通过Keller-box方法求解所获得的非相似，耦合和非线性偏微分方程组。布朗运动参数，热泳参数，修正的杜福尔数，杜福尔-路易斯溶液数，热和质量分层参数对板上无量纲速度，温度，浓度，纳米颗粒体积分数，传热和传质速率的影响为讨论并以图形方式显示。

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