Natural convection in a V-shaped cavity

Bhowmick, S; Xu, F; Saha, SC

Natural convection in a V-shaped cavity

Bhowmick, S Xu, F Saha, SC

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Publication Type:: Conference Proceeding
Citation:: International Heat Transfer Conference, 2018, 2018-August pp. 2977 - 2985
Issue Date:: 2018-01-01

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Field	Value	Language
dc.contributor.author	Bhowmick, S	en_US
dc.contributor.author	Xu, F	en_US
dc.contributor.author	Saha, SC https://orcid.org/0000-0002-9962-8919	en_US
dc.date.issued	2018-01-01	en_US
dc.identifier.citation	International Heat Transfer Conference, 2018, 2018-August pp. 2977 - 2985	en_US
dc.identifier.issn	2377-424X	en_US
dc.identifier.uri	http://hdl.handle.net/10453/135251
dc.description.abstract	© 2018 International Heat Transfer Conference. All rights reserved. Natural convection is widely present in industrial system and in nature such as in a valley due to sun radiation and thus the study of natural convection in a v-shaped cavity is of significance. In this study, the transition of natural convection in a v-shaped cavity to a chaotic state is numerically investigated. A wide range of Rayleigh numbers from 100 to 108 for the Prandtl number of 0.71 and the aspect ratio of 0.5 are considered. A set of bifurcations are described including the Pitchfork bifurcation from symmetrical to asymmetrical state and the Hopf bifurcation from steady to unsteady state. The critical Rayleigh numbers of bifurcations are obtained based on a great number of numerical tests. The spectral analysis is applied for unsteady natural convection in the cavity and the fundamental frequency is obtained. Further, the dependence on the Rayleigh number of the Nusselt number through the v-shaped cavity is quantified and the scaling relation between the Nusselt number and the Rayleigh number is presented.	en_US
dc.relation.ispartof	International Heat Transfer Conference	en_US
dc.rights	info:eu-repo/semantics/restrictedAccess
dc.title	Natural convection in a V-shaped cavity	en_US
dc.type	Conference Proceeding
utslib.citation.volume	2018-August	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Mechanical and Mechatronic Engineering
utslib.copyright.status	recently_added	*
pubs.publication-status	Published	en_US
pubs.volume	2018-August	en_US

Abstract:

© 2018 International Heat Transfer Conference. All rights reserved. Natural convection is widely present in industrial system and in nature such as in a valley due to sun radiation and thus the study of natural convection in a v-shaped cavity is of significance. In this study, the transition of natural convection in a v-shaped cavity to a chaotic state is numerically investigated. A wide range of Rayleigh numbers from 100 to 108 for the Prandtl number of 0.71 and the aspect ratio of 0.5 are considered. A set of bifurcations are described including the Pitchfork bifurcation from symmetrical to asymmetrical state and the Hopf bifurcation from steady to unsteady state. The critical Rayleigh numbers of bifurcations are obtained based on a great number of numerical tests. The spectral analysis is applied for unsteady natural convection in the cavity and the fundamental frequency is obtained. Further, the dependence on the Rayleigh number of the Nusselt number through the v-shaped cavity is quantified and the scaling relation between the Nusselt number and the Rayleigh number is presented.

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http://hdl.handle.net/10453/135251