The case of combined conduction-convection-radiation heat transfer usually occurred in solar thermal usages is the aim of the present study. This type of combined heat transfer in heat exchangers filled with a fluid saturated cellular porous medium is investigated. The flow is modeled by the Darcy-Brinkman equation. The steady state model of this combined heat transfer is solved semi-analytically based on the homotopy perturbation method (HPM) and numerically based on the finite difference method. No analytical solution has been previously proposed for the problem. Effects of porous medium shape parameter (s) and radiation parameters (T-r and lambda) on the thermal performance are analyzed. Furthermore, a discussion on the accuracy and limitations of the HPM in this kind of problems is represented. This study shows that semi-analytical methods (like HPM, VIM, DTM, and HAM) can be used in simulation and prediction of thermal performance of solar energy harvesting systems. (C) 2014 Elsevier Ltd. All rights reserved.
机构:
Islamic Azad Univ, Arak Branch, Young Researchers Club, Arak, IranIslamic Azad Univ, Arak Branch, Young Researchers Club, Arak, Iran
Moradi, A.
Hayat, T.
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Quaid I Azam Univ, Dept Math, Islamabad 44000, Pakistan
King Abdulaziz Univ, Fac Sci, Dept Math, Jeddah 21589, Saudi ArabiaIslamic Azad Univ, Arak Branch, Young Researchers Club, Arak, Iran
Hayat, T.
Alsaedi, A.
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h-index: 0
机构:
King Abdulaziz Univ, Fac Sci, Dept Math, Jeddah 21589, Saudi ArabiaIslamic Azad Univ, Arak Branch, Young Researchers Club, Arak, Iran
机构:
Islamic Azad Univ, Arak Branch, Young Researchers Club, Arak, IranIslamic Azad Univ, Arak Branch, Young Researchers Club, Arak, Iran
Moradi, A.
Hayat, T.
论文数: 0引用数: 0
h-index: 0
机构:
Quaid I Azam Univ, Dept Math, Islamabad 44000, Pakistan
King Abdulaziz Univ, Fac Sci, Dept Math, Jeddah 21589, Saudi ArabiaIslamic Azad Univ, Arak Branch, Young Researchers Club, Arak, Iran
Hayat, T.
Alsaedi, A.
论文数: 0引用数: 0
h-index: 0
机构:
King Abdulaziz Univ, Fac Sci, Dept Math, Jeddah 21589, Saudi ArabiaIslamic Azad Univ, Arak Branch, Young Researchers Club, Arak, Iran