首页> 外文期刊>International Journal of Heat and Mass Transfer >Effect of uniform inclined magnetic field on mixed convection in a lid-driven cavity having a horizontal porous layer saturated with a ferrofluid
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Effect of uniform inclined magnetic field on mixed convection in a lid-driven cavity having a horizontal porous layer saturated with a ferrofluid

机译:均匀倾斜磁场对盖驱动腔中水平对流的影响

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摘要

MHD mixed convection in a lid-driven cavity with partially filled with a porous medium saturated with a ferrofluid has been analyzed numerically. The domain of interest consists of a bottom porous layer and a nanofluid layer over the porous one with a heated motionless bottom wall and cooled upper moved wall. The governing partial differential equations formulated on the basis of a single-phase model for nanofluid, Brinkman-extended Darcy model for porous layer and Boussinesq approximation for buoyancy force have been solved by finite difference method of the second-order accuracy. Analysis has been carried out for a wide range of Hartmann number, magnetic field inclination angle, Darcy number, porous layer height, and nanoparticles volume fraction. It has been revealed that average Nusselt number is a non-monotonic function of Darcy number and porous layer height, while a growth of Hartmann number illustrates the heat transfer rate reduction.
机译:在盖子驱动的腔体中的MHD混合对流中,部分充满了充满铁磁流体的多孔介质,已经进行了数值分析。感兴趣的区域包括底部多孔层和在多孔层之上的纳米流体层,该纳米流体层具有加热的静止底壁和冷却的上部移动壁。利用二阶精度的有限差分法求解了基于纳米流体的单相模型,多孔层的Brinkman扩展Darcy模型和浮力的Boussinesq逼近法建立的支配偏微分方程。已经对广泛的哈特曼数,磁场倾斜角,达西数,多孔层高度和纳米颗粒体积分数进行了分析。已经发现,平均努塞尔数是达西数和多孔层高度的非单调函数,而哈特曼数的增加说明传热速率降低。

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