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.
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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|Item Type:||Journal Article|
|Keywords:||Boundary layer, natural convection, scaling analysis, triangular enclosure, instantaneous heating, heating up|
|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:||19 Aug 2011 09:50|
|Last Modified:||06 Apr 2013 10:09|
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