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Dufour and Soret effects on MHD flow of viscous fluid between radially stretching sheets in porous medium 被引量:1
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作者 M. NAWAZ T. HAYAT A. ALSAEDI 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI 2012年第11期1403-1418,共16页
The aim of this paper is two-dimensional magnetohydrodynamic viscous fluid bounded by infinite sheets to examine the Dufour and Soret effects on the (MHD) steady flow of an electrically conducting An incompressible... The aim of this paper is two-dimensional magnetohydrodynamic viscous fluid bounded by infinite sheets to examine the Dufour and Soret effects on the (MHD) steady flow of an electrically conducting An incompressible viscous fluid fills the porous space. The mathematical analysis is performed in the presence of viscous dissipation, Joule heating, and a first-order chemical reaction. With suitable transformations, the governing partial differential equations through momentum, energy, and concentration laws are transformed into ordinary differential equations. The resulting equations are solved by the homotopy analysis method (HAM). The convergence of the series solutions is ensured. The effects of the emerging parameters, the skin friction coefficient, the Nusselt number, and the Sherwood number are analyzed on the dimensionless velocities, temperature, and concentration fields. 展开更多
关键词 magnetohydrodynamic (MHD) flow radial stretching Soret and dufoureffects porous medium skin friction coefficient
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竖直平板嵌入非Darcy多孔介质时,数值研究流过平板的不稳定MHD自然对流中的Dufour和Soret效应 被引量:2
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作者 M·Q·艾欧德特 A·艾格汗迪 +1 位作者 黄雅意(译) 张禄坤(校) 《应用数学和力学》 CSCD 北大核心 2012年第2期195-209,共15页
就竖直平板嵌入非Darcy多孔介质中,导电流体流过平板时作不稳定的二维磁流体(MHD)双扩散对流,数值研究了Dufour和Soret效应对流动的影响.用Crank-Nicolson型的隐式有限差分法,按三对角矩阵处理,求解无量纲的非线性控制方程.详细地研究... 就竖直平板嵌入非Darcy多孔介质中,导电流体流过平板时作不稳定的二维磁流体(MHD)双扩散对流,数值研究了Dufour和Soret效应对流动的影响.用Crank-Nicolson型的隐式有限差分法,按三对角矩阵处理,求解无量纲的非线性控制方程.详细地研究了问题中出现的各种参数对不稳定无量纲的速度、温度和浓度曲线的影响.进一步地,给出并分析了表面摩擦因数、Nus-selt数和Sherwood数随时间的变化.研究结果表明,不稳定速度、温度和浓度分布曲线,受Dufour和Soret的影响十分显著.随着Dufour数的增加或者Soret数的减小,表面摩擦因数和Sherwood数都在减小,而Nusselt数在增加.研究发现,当磁场参数增加时,边界层中的速度和温度在减小. 展开更多
关键词 瞬时自由双扩散 非Darcy模型 MHD 多孔介质 Dufour效应 Soret效应 数值解
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Peristaltic flow of Williamson fluid in a convected walls channel with Soret and Dufour effects
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作者 T. Hayat H. Yasmin +1 位作者 A. Alsaedt M. Ayub 《International Journal of Biomathematics》 2016年第1期223-241,共19页
Peristaltic flow of magnetohydrodynamic (MHD) Williamson fluid in a symmetric chan- nel is addressed. Modeling is given with Sorer and Dufour effects. Channel walls have compliant properties. Analysis has been carri... Peristaltic flow of magnetohydrodynamic (MHD) Williamson fluid in a symmetric chan- nel is addressed. Modeling is given with Sorer and Dufour effects. Channel walls have compliant properties. Analysis has been carried out through long wavelength and low Reynolds number approach. The obtained series solutions for small Weissenberg number are developed. Impact of variables reflecting the salient features of wall properties, Blot numbers and Soret and Dufour on the velocity, temperature and concentration has been point out. Trapping phenomenon is also analyzed. 展开更多
关键词 Williamson fluid compliant walls convective conditions Soret and dufoureffects.
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