Unsteady natural convection in a triangular enclosure under isothermal heating

Saha, S. 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.

Item ID: 21816
Item Type: Article (Research - C1)
ISSN: 1872-6178
Keywords: boundary layer; heating up; instantaneous heating; natural convection; scaling analysis; triangular enclosure
Date Deposited: 08 May 2012 02:51
FoR Codes: 09 ENGINEERING > 0915 Interdisciplinary Engineering > 091505 Heat and Mass Transfer Operations @ 100%
SEO Codes: 97 EXPANDING KNOWLEDGE > 970109 Expanding Knowledge in Engineering @ 100%
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