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首页> 外文期刊>Applied Mechanics and Engineering >EFFECT OF CHEMICAL REACTION AND RADIATION ON DOUBLE DIFFUSIVE FLOW OF A VISCOUS, DISSIPATIVE FLUID THROUGH POROUS MEDIUM IN A RECTANGULAR CAVITY WITH HEAT SOURCES
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EFFECT OF CHEMICAL REACTION AND RADIATION ON DOUBLE DIFFUSIVE FLOW OF A VISCOUS, DISSIPATIVE FLUID THROUGH POROUS MEDIUM IN A RECTANGULAR CAVITY WITH HEAT SOURCES

机译：化学反应和辐射对带有热源的矩形腔中粘性，耗散流体通过多孔介质的双扩散流的影响

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heat and mass transfer flow; radiation; dissipation; heat sources; rectangular cavity; porous medium%In this paper, an attempt is made to discuss the combined influence of radiation and dissipation on the convective heat and mass transfer flow of a viscous fluid through a porous medium in a rectangular cavity using the Darcy model. Making use of the incompressibility, the governing non-linear coupled equations for the momentum, energy and diffusion are derived in terms of the non-dimensional stream function, temperature and concentration. The Galerkin finite element analysis with linear triangular elements is used to obtain the global stiffness matrices for the values of stream function, temperature and concentration. These coupled matrices are solved using an iterative procedure and expressions for the stream function, temperature and concentration are obtained as linear combinations of the shape functions. The behavior of temperature, concentration, the Nusselt number and Sherwood number is discussed computationally for different values of the governing parameters, such as the Rayleigh Number (Ra), heat source parameter (α), Eckert number (Ec), Schmidt Number (Sc), Soret parameter (S_0), buoyancy ratio (N).
机译：传热传质辐射;耗散;热源；矩形腔多孔介质％本文尝试使用Darcy模型讨论辐射和耗散对粘性流体通过矩形腔中多孔介质的对流传热和传质流的综合影响。利用不可压缩性，根据无量纲的流函数，温度和浓度，导出了动量，能量和扩散的控制非线性耦合方程。使用带有线性三角元素的Galerkin有限元分析来获得流函数，温度和浓度值的整体刚度矩阵。使用迭代过程求​​解这些耦合矩阵，并以形状函数的线性组合形式获得流函数，温度和浓度的表达式。针对不同的控制参数值，例如瑞利数（Ra），热源参数（α），埃克特数（Ec），施密特数（Sc），以计算方式讨论了温度，浓度，Nusselt数和Sherwood数的行为。 ），Soret参数（S_0），浮力比（N）。

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