Natural convection in a square cavity with partially active vertical walls: Time-periodic boundary condition

被引：15
|
作者：
Nithyadevi, N. [1 ]
Kandaswamy, P.
Sivasankaran, S.
机构：
[1] Bharathiar Univ, Dept Math, Coimbatore 641046, Tamil Nadu, India
[2] Bharathiar Univ, UGC DRS Ctr Fluid Dynam, Coimbatore 641046, Tamil Nadu, India
来源：
MATHEMATICAL PROBLEMS IN ENGINEERING | 2006年 / 2006卷
关键词：
D O I：
10.1155/MPE/2006/23425
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A numerical study of transient natural convection in a square cavity with partly thermally active side walls is introduced. The thermally active regions of the side walls are periodic in time. Top and bottom of the cavity are adiabatic. Nine different positions of the thermally active zones are considered. The governing equations are solved using control volume method with power-law scheme. The results are obtained for various values of amplitude, period, and Grashof numbers ranging from 10(4) - 10(6) and different thermally active situations. It is found that the average heat transfer increases by increasing amplitude for P = 1, 5, and decreasing for P = 3. The average Nusselt number behaves nonlinearly as a function of period.
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页码：1 / 16
页数：16
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