Numerical Study of Convective Heat Transfer in a Horizontal Channel

被引：0

作者：

El Alami, M. ^{[1
]}

Semma, E. A. ^{[2
]}

Najam, M. ^{[1
]}

Boutarfa, R.

机构：

[1] Univ Hassan II Ain Chock, Fac Sci, Dept Phys, Grp Therm, Casablanca, Morocco

[2] Univ Hassan 1er, Fac Sci & Tech, Lab Mecan, BP 577, Settat, Morocco

来源：

FDMP-FLUID DYNAMICS & MATERIALS PROCESSING | 2009年 / 5卷 / 01期

关键词：

Heat transfer; horizontal channel; isothermal blocks; natural convection; chimney effect;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This study is devoted to the investigation of natural convection in a two dimensional horizontal channel with rectangular heated blocks at the bottom. The aspect ratio of the channel is A = L'/H'= 5. The blocks are heated with a constant temperature while the upper plane of the channel is cold. The governing equations are solved using a finite volumes method and the SIMPLEC algorithm is used for the treatment of the pressure-velocity coupling. Special emphasis is given to detail the effect of the Rayleigh number and blocks height on the heat transfer and the mass flow rate generated by natural convection. Results are given for the following values of control parameters: Rayleigh number (5x10(3) <= Ra <= 7x10(5)), Prandtl number Pr= 0.71, opening width (C = l'/H'= 0.15), blocks gap (D = d'/H'= 0.5) and blocks height (B = h'/H = 1/2, 1/4 and 1/8).

引用

页码：23 / 36

页数：14

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