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Scaling analysis of unsteady natural convection boundary layer for instantaneous heating

Saha, Suvash C., Xu, Feng, Molla, Md. Mamun, & Bednarz, Tomasz P. (2010) Scaling analysis of unsteady natural convection boundary layer for instantaneous heating. In Proceedings of the 13th Asian Congress of Fluid Mechanics, Engineers Institute of Bangladesh, Dhaka, Bangladesh, pp. 771-775.

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Abstract

Natural convection thermal boundary layer adjacent to an instantaneous heated inclined flat plate is investigated through a scaling analysis and verified by direct numerical simulations. It is revealed from the analysis that the development of the boundary layer may be characterized by three distinct stages, i.e. a start-up stage, a transitional stage and a steady state stage. These three stages can be clearly identified from the numerical simulations. Major scales including the flow velocity, flow development time, and the thermal and viscous boundary layer thicknesses are established to quantify the flow development at different stages and over a wide range of flow parameters. Details of the scaling analysis are described in this paper.

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ID Code: 44167
Item Type: Conference Paper
Keywords: Instantaneous heating, Scaling, Boundary layer, Inclined flat plate, Boundary layer
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 2010 [please consult the authors]
Deposited On: 24 Aug 2011 08:12
Last Modified: 27 Mar 2013 22:09

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