Influence of thermal boundary conditions on natural convection in a square enclosure partially heated from below

被引：105

作者：

Cheikh, Nader Ben ^{[1
]}

Beya, Brahirn Ben ^{[1
]}

Lili, Taieb ^{[1
]}

机构：

[1] Fac Sci Tunis, Dept Phys, Tunis 1060, Tunisia

来源：

INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER | 2007年 / 34卷 / 03期

关键词：

natural convection; heat transfer; constant heat flux; boundary conditions;

D O I：

10.1016/j.icheatmasstransfer.2006.11.001

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Natural convection in air-filled 2D square enclosure heated with a constant source from below and cooled from above is studied numerically for a variety of thermal boundary conditions at the top and sidewalls. Simulations are performed for two kinds of lengths of the heated source, i.e., a small and a large source corresponding to 20% and 80% of the total length of the bottom wall, respectively. The Rayleigh number varied from 1 03 to 107. Results are presented in the form of streamline and isotherm plots as well as the variation of the Nusselt number and maximum temperature at the heat source surface. Comparisons among the different thermal configurations considered are reported. (c) 2007 Elsevier Ltd. All rights reserved.

引用

页码：369 / 379

页数：11

共 22 条

[1]

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

[2] 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

[3] 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

[4] Computational predictability of time-dependent natural convection flows in enclosures (including a benchmark solution) [J].

Christon, MA ;

Gresho, PM ;

Sutton, SB .

INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN FLUIDS, 2002, 40 (08) :953-980

[5] Effects of the thermal boundary conditions at the sidewalls upon natural convection in rectangular enclosures heated from below and cooled from above [J].

Corcione, M .

INTERNATIONAL JOURNAL OF THERMAL SCIENCES, 2003, 42 (02) :199-208

[6]

DAVIS GD, 1983, INT J NUMER METH FL, V3, P249

[7] Natural convection in cubical enclosures with thermal sources on adjacent vertical walls [J].

Frederick, RL ;

Berbakow, O .

NUMERICAL HEAT TRANSFER PART A-APPLICATIONS, 2002, 41 (03) :331-340

[8] NATURAL-CONVECTION IN RECTANGULAR ENCLOSURES HEATED FROM BELOW AND SYMMETRICALLY COOLED FROM THE SIDES [J].

GANZAROLLI, MM ;

MILANEZ, LF .

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 1995, 38 (06) :1063-1073

[9] FINITE VOLUME MULTIGRID PREDICTION OF LAMINAR NATURAL-CONVECTION - BENCH-MARK SOLUTIONS [J].

HORTMANN, M ;

PERIC, M ;

SCHEUERER, G .

INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN FLUIDS, 1990, 11 (02) :189-207

[10] NATURAL-CONVECTION IN A SQUARE ENCLOSURE HEATED PERIODICALLY FROM PART OF THE BOTTOM WALL [J].

LAKHAL, EK ;

HASNAOUI, M ;

VASSEUR, P ;

BILGEN, E .

NUMERICAL HEAT TRANSFER PART A-APPLICATIONS, 1995, 27 (03) :319-333

← 1 2 3 →