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On the natural convection boundary layer adjacent to an inclined flat plate subject to ramp heating

Saha, Suvash C., Lei, Chengwang, & Patterson, John C. (2007) On the natural convection boundary layer adjacent to an inclined flat plate subject to ramp heating. In Jacobs, Peter, McIntyre, Tim, Cleary, Matthew, Buttsworth, David, Mee, David, Clements, Rose, et al. (Eds.) Proceedings of the Sixteenth Australasian Fluid Mechanics Conference, School of Engineering, The University of Queensland, Gold Coast, Qld., pp. 121-124.

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Abstract

An investigation of the natural convection boundary layer adjacent to an inclined semi-infinite plate subject to a temperature boundary condition which follows a ramp function up until some specified time and then remains constant is reported. The development of the flow from start-up to a steadystate has been described based on scaling analyses and verified by numerical simulations. Attention in this study has been given to fluids having a Prandtl number Pr less than unity. The boundary layer flow depends on the comparison of the time at which the ramp heating is completed and the time at which the boundary layer completes its growth. If the ramp time is long compared with the steady state time, the layer reaches a quasi steady mode in which the growth of the layer is governed solely by the thermal balance between convection and conduction. On the other hand, if the ramp is completed before the layer becomes steady; the subsequent growth is governed by the balance between buoyancy and inertia, as for the case of instantaneous heating.

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5 citations in Scopus
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ID Code: 44162
Item Type: Conference Paper
Keywords: Natural convection, Scaling analysis, Ramp heating, Boundary layer
ISBN: 9781864998948
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 2007 please consult the authors
Deposited On: 24 Aug 2011 10:16
Last Modified: 03 Apr 2013 22:13

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