Enhancement of heat transfer and heat exchanger effectiveness in a double pipe heat exchanger filled with porous media: Numerical simulation and sensitivity analysis of turbulent fluid flow

被引:173
作者
Shirvan, Kamel Milani [1 ]
Ellahi, Rahmat [2 ,3 ]
Mirzakhanlari, Soroush [4 ]
Mamourian, Mojtaba [1 ]
机构
[1] Ferdowsi Univ Mashhad, Dept Mech Engn, Mashhad, Iran
[2] HUI, FBAS, Dept Math & Stat, Islamabad, Pakistan
[3] Taibah Univ, Fac Sci, Dept Math, Madinah Munawwarah, Saudi Arabia
[4] Islamic Azad Univ, Qazvin Branch, Young Researchers & Elite Club, Qazvin, Iran
关键词
Double pipe heat exchanger; Heat transfer; Porous medium; Sensitivity analysis; Turbulent flow; LOCAL THERMAL NONEQUILIBRIUM; DARCIAN FORCED-CONVECTION; THERMOELASTIC MEDIUM; PRESSURE-DROP; EFFECTIVE PARAMETERS; 2-PHASE SIMULATION; INTERFACE REGION; MAGNETIC-FIELD; LASER-PULSE; CHANNEL;
D O I
10.1016/j.applthermaleng.2016.08.116
中图分类号
O414.1 [热力学];
学科分类号
摘要
A 2-D numerical simulation and sensitivity analysis are carried out on turbulent heat transfer and heat exchanger effectiveness enhancement in a double pipe heat exchanger filled with porous media. The Darcy-Brinkman-Forchheimer and the k-epsilon turbulent models are employed to achieve heat transfer and heat exchanger effectiveness in the presented model. The sundry parameters Reynolds number (3000 <= Re <= 5000), Darcy number (10(-5) <= Da <= 10(-3)) and the porous substrate thickness (1/3 <= delta <= 1) are studied. It is found that the mean Nusselt number increases by increasing the values of Reynolds number and dwindling of the Darcy number and porous substrate thickness. In addition, the heat exchanger effectiveness enhances with the Re and Da numbers and delta. The sensitivity analysis revealed that to maximize only the mean Nusselt number then it can be achieved for Re = 5000, Da = 10(-5) and delta = 1/3. However, to maximize only the heat exchanger effectiveness then it attains at Re = 5000, Da = 10(-3) and delta = 1. On the other hand, to maximize Nu and E simultaneously, then it can be obtained for Re = 5000, Da = 10(-5) and delta = 1. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码:761 / 774
页数:14
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