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首页> 外文期刊>Applied Mechanics and Engineering >FIRST ORDER CHEMICAL REACTION ON MHD FLOW PAST AN OSCILLATING VERTICAL PLATE IN THE PRESENCE OF THERMAL RADIATION
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FIRST ORDER CHEMICAL REACTION ON MHD FLOW PAST AN OSCILLATING VERTICAL PLATE IN THE PRESENCE OF THERMAL RADIATION

机译：存在热辐射的振荡垂直平板在MHD流动中的一阶化学反应

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摘要

Thermal radiation and hydromagnetic effects on an unsteady free convective flow of a viscous incompressible flow past an infinite vertical oscillating plate with variable temperature and mass diffusion are presented, taking into account the homogeneous chemical reaction of first order. The fluid considered here is a gray, absorbing-emitting radiation but a non-scattering medium. The plate temperature is raised linearly with time and the concentration level near the plate is also raised linearly with time. An exact solution to the dimensionless governing equations is obtained by the Laplace transform method, when the plate is oscillating harmonically in its own plane. The effects of velocity, temperature and concentration are studied for different parameters such as the magnetic field parameter, phase angle, Schmidt number, thermal radiation parameter, thermal Grashof number, mass Grashof number and chemical reaction parameter. It is observed that velocity increases with a decreasing magnetic field parameter or radiation parameter. It is also observed that velocity increases with a decreasing phase angle ωt or chemical reaction parameter.
机译：考虑到一阶均相的化学反应，提出了热辐射和水磁效应对粘性不可压缩流通过温度和质量扩散可变的无限垂直振荡板的非稳态自由对流的影响。这里考虑的流体是一种灰色的，吸收发射辐射的流体，但不是散射介质。板温度随时间线性升高，板附近的浓度水平也随时间线性升高。当板在其自身平面中谐波振动时，通过Laplace变换方法可以获得无量纲控制方程的精确解。研究了不同参数对速度，温度和浓度的影响，例如磁场参数，相角，施密特数，热辐射参数，热格拉斯霍夫数，质量格拉斯霍夫数和化学反应参数。可以看出，速度随着磁场参数或辐射参数的减小而增加。还观察到，速度随着相角ωt或化学反应参数的减小而增加。

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