期刊
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
卷 114, 期 -, 页码 1086-1097出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijheatmasstransfer.2017.07.001
关键词
Uniform inclined magnetic field; Mixed convection; Horizonal porous layer; Lid-driven cavity; Ferrofluid; Numerical results
资金
- government task of the Ministry of Education and Science of the Russian Federation Project [13.9724.2017]
MHD mixed convection in a lid-driven cavity with partially filled with a porous medium saturated with a ferrofluid has been analyzed numerically. The domain of interest consists of a bottom porous layer and a nanofluid layer over the porous one with a heated motionless bottom wall and cooled upper moved wall. The governing partial differential equations formulated on the basis of a single-phase model for nano fluid, Brinkman-extended Darcy model for porous layer and Boussinesq approximation for buoyancy force have been solved by finite difference method of the second-order accuracy. Analysis has been carried out for a wide range of Hartmann number, magnetic field inclination angle, Darcy number, porous layer height, and nanoparticles volume fraction. It has been revealed that average Nusselt number is a non-monotonic function of Darcy number and porous layer height, while a growth of Hartmann number illustrates the heat transfer rate reduction. (C) 2017 Elsevier Ltd. All rights reserved.
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