Natural convection due to differential heating of inclined walls and heat source placed on bottom wall of an attic shaped space

Sojoudi, Atta, Saha, Suvash C., & Gu, YuanTong (2015) Natural convection due to differential heating of inclined walls and heat source placed on bottom wall of an attic shaped space. Energy and Buildings, 89, pp. 153-162.

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Numerical investigation of free convection heat transfer in an attic shaped enclosure with differentially heated two inclined walls and filled with air is performed in this study. The left inclined surface is uniformly heated whereas the right inclined surface is uniformly cooled. There is a heat source placed on the right side of the bottom surface. Rest of the bottom surface is kept as adiabatic. Finite volume based commercial software ANSYS 15 (Fluent) is used to solve the governing equations. Dependency of various flow parameters of fluid flow and heat transfer is analyzed including Rayleigh number, Ra ranging from 103 to 106, heater size from 0.2 to 0.6, heater position from 0.3 to 0.7 and aspect ratio from 0.2 to 1.0 with a fixed Prandtl number of 0.72. Outcomes have been reported in terms of temperature and stream function contours and local Nusselt number for various Ra, heater size, heater position, and aspect ratio. Grid sensitivity analysis is performed and numerically obtained results have been compared with those results available in the literature and found good agreement.

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ID Code: 79661
Item Type: Journal Article
Refereed: Yes
Additional URLs:
Keywords: Free convection, Attic shape space, differentially heating
DOI: 10.1016/j.enbuild.2014.12.042
ISSN: 0378-7788
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2015 Elsevier Ltd.
Copyright Statement: NOTICE: this is the author’s version of a work that was accepted for publication in Energy and Buildings. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Energy and Buildings, [VOL 89, (2015)] DOI:10.1016/j.enbuild.2014.12.042
Deposited On: 05 Jan 2015 00:52
Last Modified: 22 Feb 2017 12:21

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