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Macro and mesoscale simulations of free convective heat transfer in a cavity at various aspect ratios

In this study, we present the behavior of free convective heat transfer in a rectangular cavity by two entirely different scales of numerical methods, namely a mesoscale and macroscale methods. The cavity is bounded by two vertical isothermal walls kept at different temperatures and by two horizonta...

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Main Authors: Che Sidek, Nor Azwadi, Irwan, M. A. M.
Format: Article
Language:English
Published: Asian Network for Scientific Information 2010
Subjects:
TJ Mechanical engineering and machinery
Online Access:http://eprints.utm.my/id/eprint/26280/1/NorAzwadiCheSidek2010_MacroandMesoscaleSimulationsofFree.pdf
http://eprints.utm.my/id/eprint/26280/
http://scialert.net/abstract/?doi=jas.2010.203.208
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spelling my.utm.262802018-10-31T12:28:02Z http://eprints.utm.my/id/eprint/26280/ Macro and mesoscale simulations of free convective heat transfer in a cavity at various aspect ratios Che Sidek, Nor Azwadi Irwan, M. A. M. TJ Mechanical engineering and machinery In this study, we present the behavior of free convective heat transfer in a rectangular cavity by two entirely different scales of numerical methods, namely a mesoscale and macroscale methods. The cavity is bounded by two vertical isothermal walls kept at different temperatures and by two horizontal perfectly conducting walls. The heat flow simulations were carried out across the two isothermal walls by varying the aspect ratio of cavity with six different values -0.2, 0.5, 1.5, 2.0, 2.5 and 3.0. The macroscale simulations were performed by solving the Navier-Stokes equation using finite difference scheme while the mesoscale simulations were done using lattice Boltzmann method. This study found that the heat transfer mechanism, fluid flow behavior in terms of formation, size and strength of vortex are critically depending on the aspect ratio of the geometry. Numerical results also show excellent agreement between these two scales of simulations. Asian Network for Scientific Information 2010 Article PeerReviewed application/pdf en http://eprints.utm.my/id/eprint/26280/1/NorAzwadiCheSidek2010_MacroandMesoscaleSimulationsofFree.pdf Che Sidek, Nor Azwadi and Irwan, M. A. M. (2010) Macro and mesoscale simulations of free convective heat transfer in a cavity at various aspect ratios. Journal of Applied Sciences, 10 (3). 203 -208. ISSN 1812-5654 http://scialert.net/abstract/?doi=jas.2010.203.208 DOI:10.3923/jas.2010.203.208
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
language English
topic TJ Mechanical engineering and machinery
spellingShingle TJ Mechanical engineering and machinery
Che Sidek, Nor Azwadi
Irwan, M. A. M.
Macro and mesoscale simulations of free convective heat transfer in a cavity at various aspect ratios
description In this study, we present the behavior of free convective heat transfer in a rectangular cavity by two entirely different scales of numerical methods, namely a mesoscale and macroscale methods. The cavity is bounded by two vertical isothermal walls kept at different temperatures and by two horizontal perfectly conducting walls. The heat flow simulations were carried out across the two isothermal walls by varying the aspect ratio of cavity with six different values -0.2, 0.5, 1.5, 2.0, 2.5 and 3.0. The macroscale simulations were performed by solving the Navier-Stokes equation using finite difference scheme while the mesoscale simulations were done using lattice Boltzmann method. This study found that the heat transfer mechanism, fluid flow behavior in terms of formation, size and strength of vortex are critically depending on the aspect ratio of the geometry. Numerical results also show excellent agreement between these two scales of simulations.
format Article
author Che Sidek, Nor Azwadi
Irwan, M. A. M.
author_facet Che Sidek, Nor Azwadi
Irwan, M. A. M.
author_sort Che Sidek, Nor Azwadi
title Macro and mesoscale simulations of free convective heat transfer in a cavity at various aspect ratios
title_short Macro and mesoscale simulations of free convective heat transfer in a cavity at various aspect ratios
title_full Macro and mesoscale simulations of free convective heat transfer in a cavity at various aspect ratios
title_fullStr Macro and mesoscale simulations of free convective heat transfer in a cavity at various aspect ratios
title_full_unstemmed Macro and mesoscale simulations of free convective heat transfer in a cavity at various aspect ratios
title_sort macro and mesoscale simulations of free convective heat transfer in a cavity at various aspect ratios
publisher Asian Network for Scientific Information
publishDate 2010
url http://eprints.utm.my/id/eprint/26280/1/NorAzwadiCheSidek2010_MacroandMesoscaleSimulationsofFree.pdf
http://eprints.utm.my/id/eprint/26280/
http://scialert.net/abstract/?doi=jas.2010.203.208
_version_ 1643647729930338304
score 13.211869

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