Thermal and hydraulic performance enhancement of microchannel heat sinks utilizing porous substrates

被引：130

作者：

Ghahremannezhad, Ali ^{[1
]}

Vafai, Kambiz ^{[1
]}

机构：

[1] Univ Calif Riverside, Dept Mech Engn, Riverside, CA 92521 USA

来源：

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 2018年 / 122卷

关键词：

Microchannel heat sink; Porous substrate; Thermal resistance; Pumping power; Heat transfer optimization; VALIDATED ANALYTICAL EXPRESSIONS; FLUID-FLOW; NUMERICAL OPTIMIZATION; FORCED-CONVECTION; PRESSURE-DROP; MANAGEMENT; DESIGN; RESISTANCE; BOUNDARY; SINGLE;

D O I：

10.1016/j.ijheatmasstransfer.2018.02.024

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

A comprehensive study utilizing porous substrates in microchannel heat sinks (MCHS) is presented in this work to find an optimized design which improves thermal and hydraulic performance of conventional microchannels. Three dimensional models of MCHS with different solid and porous fin thicknesses have been analyzed in this work. A parametric optimization has been done on the thickness of the solid and porous fin, and various performance parameters are evaluated for different MCHSs. The results are compared with the conventional heat sinks and demonstrate that for every combination set of MCHS geometrical parameters, there is an optimized porous design which can improve the thermal and hydraulic performance at the same time, or at least improving one while keeping the other at the same level as a conventional heat sink. This improvement is examined for different ranges of Reynolds numbers and pumping powers. Optimization process has been applied for porous MCHSs with various heat sink material and porosities. The superior effect of optimized porous design has been observed in all cases. (C) 2018 Elsevier Ltd. All rights reserved.

引用

页码：1313 / 1326

页数：14

共 61 条

[1] Thermal and hydrodynamic analysis of microchannel heat sinks: A review [J].

Adham, Ahmed Mohammed ;

Mohd-Ghazali, Normah ;

Ahmad, Robiah .

RENEWABLE & SUSTAINABLE ENERGY REVIEWS, 2013, 21 :614-622

[2] State of the art of high heat flux cooling technologies [J].

Agostini, Bruno ;

Fabbri, Matteo ;

Park, Jung E. ;

Wojtan, Leszek ;

Thome, John R. ;

Michel, Bruno .

HEAT TRANSFER ENGINEERING, 2007, 28 (04) :258-281

[3] Analysis of fluid flow and heat transfer interfacial conditions between a porous medium and a fluid layer [J].

Alazmi, B ;

Vafai, K .

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2001, 44 (09) :1735-1749

[4] EFFECTS OF BOUNDARY-CONDITIONS ON NON-DARCIAN HEAT-TRANSFER THROUGH POROUS-MEDIA AND EXPERIMENTAL COMPARISONS [J].

AMIRI, A ;

VAFAI, K ;

KUZAY, TM .

NUMERICAL HEAT TRANSFER PART A-APPLICATIONS, 1995, 27 (06) :651-664

[5]

[Anonymous], 1980, Numerical heat transfer and fluid flow

[6] Forced convection in high porosity metal foams [J].

Calmidi, VV ;

Mahajan, RL .

JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME, 2000, 122 (03) :557-565

[7] Numerical study of the inlet/outlet arrangement effect on microchannel heat sink performance [J].

Chein, Reiyu ;

Chen, Janghwa .

INTERNATIONAL JOURNAL OF THERMAL SCIENCES, 2009, 48 (08) :1627-1638

[8] Optimisation of single and double layer counter flow microchannel heat sinks [J].

Chong, SH ;

Ooi, KT ;

Wong, TN .

APPLIED THERMAL ENGINEERING, 2002, 22 (14) :1569-1585

[9] Fluid flow and heat transfer in microchannel heat sink based on porous fin design concept [J].

Chuan, Leng ;

Wang, Xiao-Dong ;

Wang, Tian-Hu ;

Yan, Wei-Mon .

INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER, 2015, 65 :52-57

[10] Heat transfer and optimization studies on layered porous stackings under an imposed pressure drop [J].

Dathathri, Sumanth ;

Balaji, C. .

INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER, 2015, 60 :32-36

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