NUMERICAL INVESTIGATION OF FULLY-DEVELOPED TURBULENT FLUID-FLOW AND HEAT-TRANSFER IN A SQUARE DUCT

被引：13

作者：

MYONG, HK

机构：

[1] Air Conditioning and Environmental Control Laboratory, Korea Institute of Science and Technology, Seoul

来源：

INTERNATIONAL JOURNAL OF HEAT AND FLUID FLOW | 1991年 / 12卷 / 04期

关键词：

TURBULENCE; ANISOTROPIC KAPPA-EPSILON MODEL; SECONDARY FLOW; HEAT TRANSFER; WALL FUNCTION; PREDICTION;

D O I：

10.1016/0142-727X(91)90023-O

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Three-dimensional fully developed turbulent fluid flow and heat transfer in a square duct are numerically investigated with the author's anisotropic low-Reynolds-number k-epsilon turbulence model. Special attention has been given to the regions close to the wall and the corner, which are known to influence the characteristics of secondary flow a great deal. Hence, instead of the common wall function approach, the no-slip boundary condition at the wall is directly used. Velocity and temperature profiles are predicted for fully developed turbulent flows with constant wall temperature. The predicted variations of both local wall shear stress and local wall heat flux are shown to be in close agreement with available experimental data. The present paper also presents the budget of turbulent kinetic energy equation and the systematic evaluation for existing wall function forms. The commonly adopted wall function forms that are valid for two-dimensional flows are found to be inadequate for three-dimensional turbulent flows in a square duct.

引用

页码：344 / 352

页数：9

共 28 条

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