Armfield, Steven W., Kirkpatrick, M.P., Williamson, Nicholas, and Lin, Wenxian (2014) Natural convection in an inclined differentially heated square cavity. In: Proceedings of the 15th International Heat Transfer Conference. 9053. pp. 1-10. From: IHTC-15: 15th International Heat Transfer Conference, 10-15 August 2014, Kyoto, Japan.

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Abstract

Numerical simulation of two-dimensional differentially heated natural convection flow in square cavities is used to investigate the effect of inclination on the flow. In particular, when the cavity is inclined so that the heated wall is below the cooled wall, with the other two walls adiabatic, it is observed that at a specific angle of inclination the flow undergoes a bifurcation so that the fully developed flow is unsteady and single mode. The bifurcation takes the form of travelling waves continually circulating the periphery of the cavity, adjacent to the heated, cooled and adiabatic walls. It is shown that the basic flow structure is changed when the cavity is inclined, with attached plumes forming adjacent to the adiabatic walls, rather than diffuse intrusions as in the non-inclined cavity. It is the ability of the attached plumes to sustain travelling waves that leads to the bifurcation.

Item ID:	37288
Item Type:	Conference Item (Research - E1)
ISBN:	978-1-56700-421-2
Keywords:	thermophysical properties, convection, numerical simulation and super computing, differentially heated cavity flow, travelling waves, stability
Related URLs:	Organisation Publisher
Funders:	Australian Research Council (ARC)
Date Deposited:	17 Feb 2015 02:02
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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