Numerical investigation of two-phase laminar pulsating nanofluid flow in helical microchannel filled with a porous medium

被引：37
|
作者：
Sivasankaran, S. [1 ]
Narrein, K. [2 ]
机构：
[1] Univ Malaya, Inst Math Sci, Kuala Lumpur 50603, Malaysia
[2] Univ Malaya, Dept Mech Engn, Kuala Lumpur 50603, Malaysia
来源：
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER | 2016年 / 75卷
关键词：
Helical microchannel; Nanofluid; Mixture model; Porous medium; CURVED RECTANGULAR MICROCHANNELS; HEAT-EXCHANGER PERFORMANCE; COILED TUBE; THERMAL PERFORMANCE; NATURAL-CONVECTION; PRESSURE-DROP; FLUID-FLOW; SINK; CHANNEL; PIPE;
D O I：
10.1016/j.icheatmasstransfer.2016.03.016
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Numerical results of the thermal and hydraulic characteristics of pulsating laminar flow in a three-dimensional helical microchannel heat sink (HMCHS) filled with a porous medium using Al2O3-water based nanofluid are presented in this paper. The two-phase mixture model with modified effective thermal conductivity and viscosity equations were used to solve the laminar flow governing equations. The detailed results for thermal and flow fields are reported for the effects of amplitude (1-3) and frequency (5-20 rad/s). The presence of porous media led to better thermal enhancement and significant improvement in heat transfer performance was observed for sinusoidal velocity inlet conditions as compared to steady flow conditions. In addition, the proposed model showed better accuracy in predicting nanofluid flow. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：86 / 91
页数：6
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