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首页> 外文期刊>Special topics & reviews in porous media >MAGNETIC FERRO-NANOFLUID FLOW IN A ROTATING CHANNEL CONTAINING DARCIAN POROUS MEDIUM CONSIDERING INDUCED MAGNETIC FIELD AND HALL CURRENTS
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MAGNETIC FERRO-NANOFLUID FLOW IN A ROTATING CHANNEL CONTAINING DARCIAN POROUS MEDIUM CONSIDERING INDUCED MAGNETIC FIELD AND HALL CURRENTS

机译：考虑诱导磁场和霍尔电流的含达拉斯多孔介质的旋转通道中的磁性铁纳米流

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In this article, a fully developed magnetohydrodynamic (MHD) flow of a viscous incompressible electrically conductingferro-nanofluid in the presence of a uniform transverse strong magnetic field has been investigated under constantpressure gradient, taking Hall currents and induced magnetic field into account in a rotating frame of reference. ADarcy model is employed to simulate drag effects in the porous medium. The base fluid is considered as water whichconsists of magnetite-Fe_(3)O_(4) nanoparticles. The heat transfer analysis is carried out considering the viscous dissipationand Ohmic heating effects in the presence of nanoparticles. The governing equations describing the flow are solvedanalytically. The influences of the pertinent parameters on the velocity field, induced magnetic field, temperature, shear stresses, flow rate, and rate of heat transfer have been presented either graphically or in tabular form. The asymptotic behavior of solutions is analyzed for small and large values of magnetic parameter, rotation parameter, and Darcy number. The obtained results reveal that the Hall currents moderate the flow dynamics significantly. It is interesting to note that for strong magnetic field the boundary layer thickness is independent of rotation as well as solid volume fraction of nanoparticles. The rate of heat transfer at the upper plate of the channel for Fe_(3)O_(4)-water nanofluid is larger in comparison to the pure fluid.
机译：在本文中，已经研究了在恒压梯度下存在均匀横向强磁场的情况下，充分发展的粘性不可压缩导电铁纳米流体的磁流体动力学（MHD）流动，其中考虑了旋转框架中的霍尔电流和感应磁场参考。 ADarcy模型用于模拟多孔介质中的阻力效应。基础流体被认为是由磁铁矿-Fe_（3）O_（4）纳米粒子组成的水。考虑纳米颗粒存在下的粘性耗散和欧姆加热效应进行传热分析。解析地描述了描述流动的控制方程。有关参数对速度场，感应磁场，温度，剪切应力，流速和传热速率的影响已以图形或表格形式给出。针对磁参数，旋转参数和达西数的大小值，分析了溶液的渐近行为。所获得的结果表明，霍尔电流显着缓和了流动动力学。有趣的是，对于强磁场，边界层的厚度与纳米颗粒的旋转以及固体体积分数无关。与纯流体相比，Fe_（3）O_（4）-水纳米流体在通道上板的传热速率更大。

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