UNSTEADY MIXED CONVECTION IN A POROUS MEDIA FILLED LID-DRIVEN CAVITY HEATED BY A SEMI-CIRCULAR HEATERS

被引：18

作者：

Rahman, Md Mustafizur ^{[1
,3
]}

Oztop, Hakan F. ^{[2
]}

Saidur, Rahman ^{[4
]}

Mekhilef, Saad ^{[5
]}

Al-Salem, Khaled ^{[6
]}

机构：

[1] Univ Brunei Darussalam, Fac Sci, Math & Comp Sci Grp, Bandar Seri Begaman, Brunei

[2] Firat Univ, Dept Mech Engn, Fac Technol, TR-23169 Elazig, Turkey

[3] Bangladesh Univ Engn & Technol, Dept Math, Dhaka, Bangladesh

[4] King Fand Univ Petr & Minerals, Res Inst, Ctr Res Excellence Renewable Energy CoRE RE, Dhahran, Saudi Arabia

[5] Univ Malaya, Fac Engn, Dept Elect Engn, Kuala Lumpur, Malaysia

[6] King Saud Univ, Dept Mech Engn, Engn Coll, Riyadh, Saudi Arabia

来源：

THERMAL SCIENCE | 2015年 / 19卷 / 05期

关键词：

porous media; lid-driven cavity; mixed convection; curvilinear heater; OSCILLATING THIN FIN; NATURAL-CONVECTION; ENTROPY GENERATION; FLUID-FLOW; ENCLOSURE; WALL;

D O I：

10.2298/TSCI130725098R

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

A computational study has been performed on natural convection heat transfer and fluid flow in a porous media filled enclosure with semi-circular heaters by using finite element method. The ceiling of the cavity moves with a constant velocity and it is insulated. Vertical walls temperature is lower than that of heaters. Results are presented via streamlines, isotherms, average Nusselt numbers, and cross-sectional velocity for different governing parameters such as Richardson and Darcy numbers, and dimensionless time. It is observed that both circulation of the flow and heat transfer is strongly affected with time increment and Darcy number inside the cavity.

引用

页码：1761 / 1768

页数：8

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