Unsteady natural convection in a triangular enclosure under isothermal heating

Saha, Suvash C. (2011) Unsteady natural convection in a triangular enclosure under isothermal heating. Energy and Buildings, 43(2-3), pp. 695-703.

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The fluid flow and heat transfer inside a triangular enclosure due to instantaneous heating on the inclined walls are investigated using an improved scaling analysis and direct numerical simulations. The development of the unsteady natural convection boundary layer under the inclined walls may be classified into three distinct stages including a start-up stage, a transitional stage and a steady state stage, which can be clearly identified in the analytical and numerical results. A new triple-layer integral approach of scaling analysis has been considered to obtain major scaling relations of the velocity, thicknesses, Nusselt number and the flow development time of the natural convection boundary layer and verified by direct numerical simulations over a wide range of flow parameters.

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30 citations in Scopus
23 citations in Web of Science®
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128 since deposited on 18 Aug 2011
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ID Code: 44072
Item Type: Journal Article
Refereed: Yes
Keywords: Boundary layer, natural convection, scaling analysis, triangular enclosure, instantaneous heating, heating up
DOI: 10.1016/j.enbuild.2010.11.014
ISSN: 0378-7788
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > MECHANICAL ENGINEERING (091300) > Numerical Modelling and Mechanical Characterisation (091307)
Divisions: Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Past > Schools > School of Engineering Systems
Copyright Owner: Copyright 2011 Elsevier
Deposited On: 18 Aug 2011 23:50
Last Modified: 06 Apr 2013 00:09

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