International Journal of Numerical Methods for Heat and Fluid Flow, ( ISI ), Volume (27), No (10), Year (2017-10) , Pages (2174-2202)

Title : ( MHD heat transfer and entropy generation in inclined trapezoidal cavity filled with nanofluid )

Authors: kamel Milani Shirvan , S. Mirzakhanlari , Hakan F. Öztop , Mojtaba Mamourian , Kh. Al-Salem ,

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Abstract

Purpose – The main purpose of this paper is to define 2D numerical study and a sensitivity analysis of natural convection heat transfer and entropy generation of Al2O3-water nanofluid in a trapezoidal cavity, with considering of the presence of a constant axial magnetic field. Design/methodology/approach – The effects of the three effective parameters, the Rayleigh number, Hartmann number (Ha) and also inclination angle on the heat transfer performance and entropy generation, are investigated using a finite volume approach. The sensitivity analysis of the effective parameters is done utilizing the response surfacemethodology. Findings – The results obtained showed that the mean Nusselt number and total entropy generation increase with the Rayleigh number. Also, increasing the inclination angle reduces the mean Nusselt number (regardless of the magnetic field). In addition, it is found that the mean Nusselt number increases until Ha = 10 and then decreases by increasing of Ha number, regardless of the inclination angle. The sensitivity of the mean Nusselt number to the Ha number and inclination angle a is negative. It is concluded that to maximize the mean Nusselt number and minimize the entropy generation, simultaneously, the Ha and inclination angle must be 50° and 0°, respectively.

Keywords

, Natural convection, Inclination angle, Response surface methodology, MHD, Entropy generation, Sensitivity analysis
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@article{paperid:1065075,
author = {Milani Shirvan, Kamel and S. Mirzakhanlari and Hakan F. Öztop and Mamourian, Mojtaba and Kh. Al-Salem},
title = {MHD heat transfer and entropy generation in inclined trapezoidal cavity filled with nanofluid},
journal = {International Journal of Numerical Methods for Heat and Fluid Flow},
year = {2017},
volume = {27},
number = {10},
month = {October},
issn = {0961-5539},
pages = {2174--2202},
numpages = {28},
keywords = {Natural convection; Inclination angle; Response surface methodology; MHD; Entropy generation; Sensitivity analysis},
}

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%0 Journal Article
%T MHD heat transfer and entropy generation in inclined trapezoidal cavity filled with nanofluid
%A Milani Shirvan, Kamel
%A S. Mirzakhanlari
%A Hakan F. Öztop
%A Mamourian, Mojtaba
%A Kh. Al-Salem
%J International Journal of Numerical Methods for Heat and Fluid Flow
%@ 0961-5539
%D 2017

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