热电泳、霍尔电流和热源对斜板耗散排列对流的摄动分析

G. Dharmaiah, O. Makinde, K. Balamurugan
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引用次数: 7

摘要

本文研究了热泳、热源和霍尔电流对插入可渗透介质的倾斜板的耗散调节MHD联合对流的影响。利用无量纲变量,将偏微分方程组转化为无量纲方程组。利用微扰技术,确定了速度、温度、浓度分布、表面摩擦、传热率和传质率的估计解。借助图表来解释所获得的结果,以检验不同参数的影响,如磁性参数(M)、定向磁性参数(ξ)、施密特数(Sc)、埃克特数(Ec)、倾角(α)、普朗特数(Pr)、发热参数(Q)和化学反应(Kr),假设两种情况,即情况I:Gr<0,Gm<0(加热板上的流动);情况II:当Gr>0时,Gm>0(冷却板上的流量)。此外,适当参数对表面摩擦系数和传热传质速率的影响以表格形式进行了数值计算。表面摩擦系数随着磁场的升高而逐渐减小。Sherwood和Nusselt的数量随着化学反应的增强而增加。
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Perturbation analysis of thermophoresis, hall current and heat source on flow dissipative aligned convective flow about an inclined plate
This present examination researches the impacts of thermophoresis, heat source and Hall current on dissipative adjusted MHD joint convection stream about an inclined plate inserted in a permeable medium. Utilizing dimensionless variables, the system of partial differential equations is changed into dimensionless equations. By making use of perturbation technique, estimated solutions for velocity, temperature, concentration profiles, skin friction, rate of heat transfer and rate of mass transfer have been determined. The attained results are explained with an assistance of diagrams to examine the impact of distinct parameters such as Magnetic parameter (M), Aligned magnetic parameter (ξ), Schmidt number (Sc), Eckert number (Ec), inclined angle (α), Prandtl number (Pr), heat generation parameter (Q), and chemical reaction (Kr), assuming two cases viz. Case I: Gr < 0, Gm < 0 (flow on heated plate); Case II: when Gr > 0, Gm > 0(flow on cooled plate). Additionally, the impacts of the appropriate parameters on the skin-friction coefficient and rates of heat and mass transfer are numerically furnished in tabular form. Skin friction coefficients are firmly diminished as magnetic field rises. Sherwood and Nusselt numbers boost up as enhance in chemical reaction.
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