Natural convection heat transfer in a baffled triangular enclosure

Saha, Suvash C. & Gu, YuanTong (2014) Natural convection heat transfer in a baffled triangular enclosure. In Chowdhury, Harun & Alam, Firoz (Eds.) The Proceedings of the 19th Australasian Fluid Mechanics Conference, RMIT University Melbourne, Australia, RMIT University, Melbourne, Australia, p. 19.

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To reduce the natural convection heat loss from enclosures many researchers used convection suppression devices in the past. In this study a single baffle is used under the top tip to investigate numerically the natural convection heat loss in an attic shaped enclosure which is a cost effective approach. The case considered here is one inclined wall of the enclosure is uniformly heated while the other inclined wall is uniformly cooled with adiabatic bottom wall. The finite volume method has been used to discretize the governing equations, with the QUICK scheme approximating the advection term. The diffusion terms are discretized using central-differencing with second order accuracy. A wide range of governing parameters are studied (Rayleigh number, aspect ratio, baffle length etc.). It is observed that the heat transfer due to natural convection in the enclosure reduces when the baffle length is increased. Effects of other parameters on heat transfer and flow field are described in this study.

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ID Code: 79483
Item Type: Conference Paper
Refereed: Yes
Additional URLs:
Keywords: Natural Convection, Heat Transfer, BaffledTriangular Enclosure
ISBN: 9780646596952
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > MECHANICAL ENGINEERING (091300) > Numerical Modelling and Mechanical Characterisation (091307)
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2014 [please consult the authors]
Deposited On: 16 Dec 2014 05:20
Last Modified: 04 Feb 2015 03:44

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