化学反应的影响,热源,俗,杜福尔影响传热传质边界层流动在拉伸圆柱体嵌入多孔介质使用Brinkman-Forchheimer达西扩展模型

Bishwa Ram沙玛¹和Animesh Aich²

Dibrugarh大学教授,数学系Dibrugarh,印度阿萨姆邦
研究学者、数学系、Dibrugarh大学Dibrugarh,印度阿萨姆邦

文摘

由边界层流动传热传质特征在拉伸筒嵌在多孔介质受化学反应和热源进行数值通过考虑达西俗和杜福尔效果使用Brinkman-Forchheimer扩展模型。浓度剖面绘制各种雷诺数值,达西数,化学反应参数,普朗特数,施密特数,热源,非参数,俗,杜福尔数字。传质速率的计算结果以表格的形式提出了不同的参数。

关键字

多孔介质传热传质,汽缸,俗和杜福尔的影响,化学反应,热源,Brinkman-Forchheimer方程。

介绍

通过多孔介质对流在近几十年来吸引了相当多的关注由于其许多重要的工程,环境和地球物理应用。最近的书Nield Bejan[1],因和流行[2]提出一个全面的帐户可用的信息。合并后的化学反应传热传质问题近年来受到相当多的关注。Das[3]研究了影响化学反应和传质流过去一个冲动无限竖直板恒热流。Andersson[4]研究了质量流和扩散的化学物种与一阶和高阶反应线性拉伸表面。Anjalidevi和Kandasamy[5]分析了稳定层流沿着半无限水平板的一个物种浓度和化学反应。Muthucumaraswamy[6]研究化学反应的影响在一个移动的等温垂直的无限长表面吸。Chamkha[7]讨论了传热传质分析解决方案的磁流体动力质量流量均匀拉伸垂直渗透表面生成热的影响/吸收和化学反应。El-Kabeir和Modather[8]研究化学反应的影响传热传质通过磁流体动力流垂直圆锥表面微极流体的热生成/吸收。帕[9]相似解决方案获得双色散影响自由对流磁流在非达西多孔介质传热传质与俗杜福尔的影响,表明在协助和反对浮力,杜福尔和俗数字大大影响墙传质速率,这两个也减少了与强磁场。 Aziz [10] studied the thermal – diffusion and diffusion –thermo effects on the heat and mass transfer characteristics of free convection past a continuously stretching permeable surface in the presence of magnetic field and radiation. Postelnicu [11] has discussed the influence of chemical reaction on heat and mass transfer by natural convection from vertical surfaces embedded in fluid – saturated porous medium considering Soret and Dufour effects . Cheng [12] studied the Soret and Dufour effects on natural convection heat and mass transfer from a vertical cone in a porous medium. Pal and Mondal [13] analysed the effects of Soret and Dufour numbers , chemical reaction and thermal radiation on MHD non-Darcy unsteady mixed convective heat and mass transfer over a stretchingsheet . Sharma [14] has analysed the Soret and Dufour effects on separation of binary fluid mixture in MHD natural convection in porous media. El.Kabeir (2011) has studied the Soret and Dufour effects on heat and mass transfer due to a stretching cylinder saturated porous medium with chemically-reactive species.

本文的目的是研究化学反应,热源,thermaldiffusion diffusion-thermo影响传热传质由于拉伸圆柱体嵌入在多孔介质使用延伸达西Brinkman-Forchheimer模型。

分析

结果和讨论

CaseIX:

图9展示浓度剖面不同α的值₀。浓度的值更接近圆柱体的表面比它的价值的边界层。它描述了柱体表面附近的浓度降低,增加参数α的值₀但在n = 4起,反向效果观察。

结论

在这个工作中,化学反应,热源、热扩散和diffusion-thermo影响传热传质由于拉伸圆柱体嵌入多孔介质使用达西Brinkman-Forchheimer扩展模型已被调查。本文从从表1明显,我们可以得出结论,传质速率降低

引用

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