A NUMERICAL STUDY OF 3D NATURAL-CONVECTION IN A CUBE - EFFECTS OF THE HORIZONTAL THERMAL-BOUNDARY CONDITIONS

被引：29

作者：

FUSEGI, T

HYUN, JM

KUWAHARA, K

机构：

[1] Institute of Computational Fluid Dynamics, Meguro, Tokyo, 152

[2] Institute of Space and Astronautical Science, Sagamihara, Kanagawa, 229

来源：

FLUID DYNAMICS RESEARCH | 1991年 / 8卷 / 5-6期

关键词：

D O I：

10.1016/0169-5983(91)90044-J

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

A high-resolution, three-dimensional finite-difference numerical study of natural convection flows of a viscous fluid in a differentially heated cubical box is reported. The vertical sidewalls of the enclosure are maintained at constant temperatures of different values. The other vertical walls (the end walls) are thermally insulated. For the horizontal walls, two kinds of thermal boundary conditions are specified: adiabatic and perfectly conducting. Computations have been performed for an air-filled cavity for Rayleigh numbers of 10(5) and 10(6). The specific effects of the horizontal thermal boundary conditions on the flow structure are examined in detail. In the case of conducting walls, heat transfer through the horizontal walls enhances the convective flow activities. The numerically predicted velocity and temperature profiles in the symmetry planes are consistent with previous experimental measurements and computations.

引用

页码：221 / 230

页数：10

共 18 条

[1]

Bajorek, Lloyd, Experimental investigation of natural convection in partitioned enclosures, Journal of Heat Transfer, 104, pp. 527-532, (1982)

[2]

Bilski, Lloyd, Yang, An experimental investigation of the laminar natural convection velocity in square and partitioned enclosures, Proc. 8th Int. Heat Transfer Conference, 4, pp. 1513-1518, (1986)

[3]

Briggs, Jones, Two-dimensional periodic natural convection in a rectangular enclosure of aspect ratio one, J. Heat Transf., 107, pp. 850-854, (1985)

[4]

De Vahl Davis, Natural convection of air in a square cavity: a benchmark numerical solution, Int. J. Num. Methods Fluids, 3, pp. 249-264, (1983)

[5]

Freitas, Street, Findikakis, Koseff, Numerical simulation of three-dimensional flow in a cavity, Int. J. Num. Methods Fluids, 5, pp. 561-575, (1985)

[6]

Fusegi, Hyun, Kuwahara, Farouk, A numerical study of three-dimensional natural convection in a differentially heated cubical enclosure, Int. J. Heat Mass Transf., 34, pp. 1543-1557, (1991)

[7]

Henkes, Hoogendoorn, Bifurcation to unsteady natural convection for air and water in a cavity heated from the side, Proc. 9th Int. Heal Transfer Conference, 2, pp. 257-262, (1990)

[8]

Hiller, Koch, Kowalewski, de Vahl Davis, Behnia, Experimental and numerical investigation of natural convection in a cube with two heated side walls, Proc. Int. Union of Theoretical and Applied Mechanics Symposium, pp. 717-726, (1990)

[9]

Kim, Viskanta, Study of the effects of wall conductance on natural convection in differentially oriented square cavities, J. Fluid Mech., 144, pp. 153-176, (1984)

[10]

Krane, Jessee, Some detailed field measurements for a natural convection flow in a vertical square enclosure, Proc. Ist ASME-JSME Thermal Engineering Joint Conference, 1, pp. 323-329, (1983)

← 1 2 →