Free Convection Boundary Layer Flow from a Vertical Flat Plate Embedded in a Darcy Porous Medium Filled with a Nanofluid: Effects of Magnetic Field and Thermal Radiation

被引：22

作者：

Agha, Hamza Ali ^{[1
,2
]}

Bouaziz, Mohamed Najib ^{[2
]}

Hanini, Salah ^{[2
]}

机构：

[1] Univ A MIRA, Dept Mech Engn, Fac Technol, Bejaia 06000, Algeria

[2] Univ Medea, Lab Biomat & Transport Phenomena, Medea 26000, Algeria

来源：

ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING | 2014年 / 39卷 / 11期

关键词：

Darcy porous medium; Nanofluid; Natural convection; MHD; Thermal radiation; SCALING GROUP TRANSFORMATION; STAGNATION-POINT FLOW; NATURAL-CONVECTION; MASS-TRANSFER; STRETCHING SURFACE; HEAT-TRANSFER; CONDUCTIVITY;

D O I：

10.1007/s13369-014-1405-z

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

In this work, a boundary layer analysis is presented for a vertical flat plate embedded in a porous medium saturated with a nanofluid. A radiation heat flux is included in the energy equation, and a uniform magnetic field is applied. The model used for the nanofluid includes the effects of Brownian motion and thermophoresis, while for the porous medium the Darcy model is used. Formulation of the problem is achieved by appropriate similarity transformations. To validate the numerical results, comparison is made with those available and a fairly good agreement is obtained. A parametric study of physical parameters is conducted to display their influence on the various profiles. Other quantities of interest are computed. It can be concluded that the radiation effect due to the heat flux combined with the magnetic parameter becomes prominent through the presence of the nanoparticles and through the rise of the Lorentz force.

引用

页码：8331 / 8340

页数：10

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