Natural convection in a bi-heater configuration of passive electronic cooling

被引：60

作者：

Banerjee, Sumanta ^{[2
]}

Mukhopadhyay, Achintya ^{[2
]}

Sen, Swarnendu ^{[2
]}

Ganguly, Ranjan ^{[1
]}

机构：

[1] Jadavpur Univ, Power Engn Dept, Kolkata 700098, India

[2] Jadavpur Univ, Dept Mech Engn, Kolkata 700032, W Bengal, India

来源：

INTERNATIONAL JOURNAL OF THERMAL SCIENCES | 2008年 / 47卷 / 11期

关键词：

Passive cooling; Natural convection; MEMS devices; Square cavity; Grashof number;

D O I：

10.1016/j.ijthermalsci.2007.12.004

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The present work reports steady state simulation of natural convection in a horizontal, planar square cavity with two discrete heat sources (representing power-dissipating semiconductor devices in electronics/MEMS applications), flush-mounted on its bottom wall. The heaters are modeled as constant-flux heat sources. The sidewalls of the cavity are isothermal heat sinks. The top wall and the non-heated portions of the bottom wall are adiabatic. Buoyancy-driven convection is simulated for varying length and/or strength ratios of the two heat sources, for a fixed cavity size and a constant value of total thermal energy input. The computational study quantitatively depicts the critical roles played by the heater length and heater strength ratios in ensuring that the devices operate within the 'safe' temperature limits specified by the manufacturer. Such quantitative predictions help determine the range in which the heater sizes and/or flux strengths may be varied so that the conditions of operation remain within the specified thermal limit. (C) 2007 Elsevier Masson SAS. All rights reserved.

引用

页码：1516 / 1527

页数：12

共 32 条

[1]

[Anonymous], 1980, SERIES COMPUTATIONAL, DOI [DOI 10.1201/9781482234213, 10.1201/9781482234213]

[2]

[Anonymous], 2001, ELECTR HBK SERIES

[3] Thermal modeling and performance of high heat flux SO packages [J].

Arik, M ;

Garg, I ;

Bar-Cohen, A .

IEEE TRANSACTIONS ON ADVANCED PACKAGING, 2004, 27 (02) :398-412

[4] Natural convection in enclosures with localized heating from below and symmetrical cooling from sides [J].

Aydin, O ;

Yang, WJ .

INTERNATIONAL JOURNAL OF NUMERICAL METHODS FOR HEAT & FLUID FLOW, 2000, 10 (5-6) :518-529

[5] Time-dependent buoyant convection in an enclosure with discrete heat sources [J].

Bae, JH ;

Hyun, JM .

INTERNATIONAL JOURNAL OF THERMAL SCIENCES, 2004, 43 (01) :3-11

[6]

BANERJEE S, 2006, P NCFMFP2006 IIT BOM, P1

[7] Natural convection in an enclosure with distributed heat sources [J].

Bazylak, A ;

Djilali, N ;

Sinton, D .

NUMERICAL HEAT TRANSFER PART A-APPLICATIONS, 2006, 49 (07) :655-667

[8] Convection heat transfer from discrete heat sources in a liquid cooled rectangular channel [J].

Bhowmik, H ;

Tso, CP ;

Tou, KW ;

Tan, FL .

APPLIED THERMAL ENGINEERING, 2005, 25 (16) :2532-2542

[9] Natural convective heat transfer in square enclosures heated from below [J].

Calcagni, B ;

Marsili, F ;

Paroncini, M .

APPLIED THERMAL ENGINEERING, 2005, 25 (16) :2522-2531

[10] Influence of thermal boundary conditions on natural convection in a square enclosure partially heated from below [J].

Cheikh, Nader Ben ;

Beya, Brahirn Ben ;

Lili, Taieb .

INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER, 2007, 34 (03) :369-379

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