Theoretical and experimental study of natural convection on a horizontal plate

被引：52

作者：

Pretot, S ^{[1
]}

Zeghmati, B ^{[1
]}

Le Palec, G ^{[1
]}

机构：

[1] Univ Perpignan, Lab Mecan Acoust & Instrumentat, F-66860 Perpignan, France

来源：

APPLIED THERMAL ENGINEERING | 2000年 / 20卷 / 10期

关键词：

thermal plume; isotherm; stream function; heat transfer;

D O I：

10.1016/S1359-4311(99)00067-8

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The authors report a numerical and experimental study of the natural convection flow above an upward facing horizontal heated plate placed in a semi-infinite medium, The equations, which govern the phenomenon, are discretized by using the control volume approach, The linkage between the momentum and continuity equations is realized with the SIMPLE algorithm. The results show the existence of two regions situated near the sides of the plate, which break away in the middle of the heated surface and form a thermal plume. The local heat transfer coefficient is higher near the sides of the plate and decreases at the central heated region. The validity of the above numerical results is experimentally checked with measurements of the temperature in the air surrounding the plate, which leads to experimental Nusselt numbers. (C) 2000 Elsevier Science Ltd. All rights reserved.

引用

页码：873 / 891

页数：19

共 17 条

[1]

Anderson DA, 1984, COMPUTATIONAL FLUID

[2]

CERISIER P, 1997, P 8 JITH MARS, P65

[3] A NUMERICAL STUDY OF TWO-DIMENSIONAL NATURAL-CONVECTION IN SQUARE OPEN CAVITIES [J].

CHAN, YL ;

TIEN, CL .

NUMERICAL HEAT TRANSFER, 1985, 8 (01) :65-80

[4] NATURAL-CONVECTION ON HORIZONTAL, INCLINED, AND VERTICAL PLATES WITH VARIABLE SURFACE-TEMPERATURE OR HEAT-FLUX [J].

CHEN, TS ;

TIEN, HC ;

ARMALY, BF .

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 1986, 29 (10) :1465-1478

[5] NATURAL CONVECTION HEAT-TRANSFER FROM A PLATE WITH ARBITRARY INCLINATION [J].

FUJII, T ;

IMURA, H .

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 1972, 15 (04) :755-+

[6] HEAT-TRANSFER AND FLUID-FLOW OF NATURAL-CONVECTION ADJACENT TO UPWARD-FACING HORIZONTAL PLATES [J].

KITAMURA, K ;

KIMURA, F .

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 1995, 38 (17) :3149-3159

[7]

LIN HT, 1984, INT J HEAT MASS TRAN, V39, P2243

[8]

Minkowycz W., 1988, Handbook of numerical heat transfer

[9] SOME EXPERIMENTAL METHODS FOR HEAT-TRANSFER STUDIES [J].

MOFFAT, RJ .

EXPERIMENTAL THERMAL AND FLUID SCIENCE, 1990, 3 (01) :14-32

[10]

Patankar S.V., 1980, Numerical Heat Transfer and Fluid-Flow, DOI 10.1201/9781482234213

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