Natural convection in a square cavity with partially active vertical walls: Time-periodic boundary condition
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 cons...
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Series: | Mathematical Problems in Engineering |
Online Access: | http://dx.doi.org/10.1155/MPE/2006/23425 |
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doaj-6b8fb79dd9184392b7c2dedb96145ece2020-11-24T22:51:54ZengHindawi LimitedMathematical Problems in Engineering1024-123X1563-51472006-01-01200610.1155/MPE/2006/2342523425Natural convection in a square cavity with partially active vertical walls: Time-periodic boundary conditionN. Nithyadevi0P. Kandaswamy1S. Sivasankaran2Department of Mathematics and UGC-DRS Centre for Fluid Dynamics, Bharathiar University, Coimbatore 641 046, IndiaDepartment of Mathematics and UGC-DRS Centre for Fluid Dynamics, Bharathiar University, Coimbatore 641 046, IndiaDepartment of Mathematics and UGC-DRS Centre for Fluid Dynamics, Bharathiar University, Coimbatore 641 046, IndiaA 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 104–106 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.http://dx.doi.org/10.1155/MPE/2006/23425 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
N. Nithyadevi P. Kandaswamy S. Sivasankaran |
spellingShingle |
N. Nithyadevi P. Kandaswamy S. Sivasankaran Natural convection in a square cavity with partially active vertical walls: Time-periodic boundary condition Mathematical Problems in Engineering |
author_facet |
N. Nithyadevi P. Kandaswamy S. Sivasankaran |
author_sort |
N. Nithyadevi |
title |
Natural convection in a square cavity with partially active vertical walls: Time-periodic boundary condition |
title_short |
Natural convection in a square cavity with partially active vertical walls: Time-periodic boundary condition |
title_full |
Natural convection in a square cavity with partially active vertical walls: Time-periodic boundary condition |
title_fullStr |
Natural convection in a square cavity with partially active vertical walls: Time-periodic boundary condition |
title_full_unstemmed |
Natural convection in a square cavity with partially active vertical walls: Time-periodic boundary condition |
title_sort |
natural convection in a square cavity with partially active vertical walls: time-periodic boundary condition |
publisher |
Hindawi Limited |
series |
Mathematical Problems in Engineering |
issn |
1024-123X 1563-5147 |
publishDate |
2006-01-01 |
description |
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
104–106 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. |
url |
http://dx.doi.org/10.1155/MPE/2006/23425 |
work_keys_str_mv |
AT nnithyadevi naturalconvectioninasquarecavitywithpartiallyactiveverticalwallstimeperiodicboundarycondition AT pkandaswamy naturalconvectioninasquarecavitywithpartiallyactiveverticalwallstimeperiodicboundarycondition AT ssivasankaran naturalconvectioninasquarecavitywithpartiallyactiveverticalwallstimeperiodicboundarycondition |
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1725668213328445440 |