Transition to unsteady natural convection flow in a prismatic enclosure of triangular section

Cui, H; Xu, F; Saha, SC

Transition to unsteady natural convection flow in a prismatic enclosure of triangular section

Cui, H Xu, F Saha, SC

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Publication Type:: Journal Article
Citation:: International Journal of Thermal Sciences, 2017, 111 pp. 330 - 339
Issue Date:: 2017-01-01

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Field	Value	Language
dc.contributor.author	Cui, H	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	2017-01-01	en_US
dc.identifier.citation	International Journal of Thermal Sciences, 2017, 111 pp. 330 - 339	en_US
dc.identifier.issn	1290-0729	en_US
dc.identifier.uri	http://hdl.handle.net/10453/123933
dc.description.abstract	© 2016 Elsevier Masson SAS Natural convection in a prismatic enclosure of triangular section with the top cooling and the bottom heating is investigated using three dimensional (3D) numerical simulations for a wide range of Rayleigh numbers from 100 to 1.25 × 106. The numerical result has been compared with the experiment. The development of natural convection flows in the cavity following sudden heating and cooling involves three stages: an initial stage, a transitional stage and a fully developed stage. Transition to unsteady natural convection flow in the fully developed stage, dependent on the Rayleigh number, is described. The flow structure including transversal and longitudinal rolls is characterized and the corresponding mechanism is discussed. The critical Rayleigh number for the transition to unsteady natural convection flow is obtained. The dependence of heat transfer on the Rayleigh number is quantified.	en_US
dc.relation.ispartof	International Journal of Thermal Sciences	en_US
dc.relation.isbasedon	10.1016/j.ijthermalsci.2016.09.008	en_US
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject.classification	Mechanical Engineering & Transports	en_US
dc.title	Transition to unsteady natural convection flow in a prismatic enclosure of triangular section	en_US
dc.type	Journal Article
utslib.citation.volume	111	en_US
utslib.for	0102 Applied Mathematics	en_US
utslib.for	0913 Mechanical Engineering	en_US
utslib.for	0915 Interdisciplinary Engineering	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	closed_access	*
pubs.publication-status	Published	en_US
pubs.volume	111	en_US

Abstract:

© 2016 Elsevier Masson SAS Natural convection in a prismatic enclosure of triangular section with the top cooling and the bottom heating is investigated using three dimensional (3D) numerical simulations for a wide range of Rayleigh numbers from 100 to 1.25 × 106. The numerical result has been compared with the experiment. The development of natural convection flows in the cavity following sudden heating and cooling involves three stages: an initial stage, a transitional stage and a fully developed stage. Transition to unsteady natural convection flow in the fully developed stage, dependent on the Rayleigh number, is described. The flow structure including transversal and longitudinal rolls is characterized and the corresponding mechanism is discussed. The critical Rayleigh number for the transition to unsteady natural convection flow is obtained. The dependence of heat transfer on the Rayleigh number is quantified.

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http://hdl.handle.net/10453/123933