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MHD Forced Convective Laminar Boundary Layer Flow from a Convectively Heated Moving Vertical Plate with Radiation and Transpiration Effect

机译：来自对流加热的运动垂直板的MHD强迫对流层流边界层流具有辐射和蒸腾作用

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摘要

A two-dimensional steady forced convective flow of a Newtonian fluid past a convectively heated permeable vertically moving plate in the presence of a variable magnetic field and radiation effect has been investigated numerically. The plate moves either in assisting or opposing direction to the free stream. The plate and free stream velocities are considered to be proportional to whilst the magnetic field and mass transfer velocity are taken to be proportional to where is the distance along the plate from the leading edge of the plate. Instead of using existing similarity transformations, we use a linear group of transformations to transform the governing equations into similarity equations with relevant boundary conditions. Numerical solutions of the similarity equations are presented to show the effects of the controlling parameters on the dimensionless velocity, temperature and concentration profiles as well as on the friction factor, rate of heat and mass transfer. It is found that the rate of heat transfer elevates with the mass transfer velocity, convective heat transfer, Prandtl number, velocity ratio and the magnetic field parameters. It is also found that the rate of mass transfer enhances with the mass transfer velocity, velocity ratio, power law index and the Schmidt number, whilst it suppresses with the magnetic field parameter. Our results are compared with the results existing in the open literature. The comparisons are satisfactory.
机译：在存在可变磁场和辐射效应的情况下，牛顿流体经过对流加热的可渗透垂直移动板的二维稳态强迫对流流动已通过数值研究。板沿自由流的辅助方向或相反方向移动。板和自由流的速度被认为是成正比的，而磁场和传质速度则被认为与沿板到板的前缘的距离成正比。代替使用现有的相似性变换，我们使用线性变换组将控制方程式转换为具有相关边界条件的相似性方程式。给出了相似性方程的数值解，以显示控制参数对无量纲速度，温度和浓度分布以及对摩擦系数，传热速率和传质的影响。发现传热速率随传质速度，对流传热，普朗特数，速度比和磁场参数而升高。还发现，传质速率随传质速度，速度比，幂律指数和施密特数而提高，而受磁场参数抑制。我们的结果与公开文献中的结果进行了比较。比较令人满意。

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