Experimental study of natural convection in a V-shape-section cavity

Wang, X; Bhowmick, S; Tian, ZF; Saha, SC; Xu, F

Experimental study of natural convection in a V-shape-section cavity

Wang, X Bhowmick, S Tian, ZF Saha, SC Xu, F

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Publisher:: AMER INST PHYSICS
Publication Type:: Journal Article
Citation:: Physics of Fluids, 2021, 33, (1)
Issue Date:: 2021-01-01

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Field	Value	Language
dc.contributor.author	Wang, X
dc.contributor.author	Bhowmick, S
dc.contributor.author	Tian, ZF
dc.contributor.author	Saha, SC
dc.contributor.author	Xu, F
dc.date.accessioned	2022-06-10T04:02:41Z
dc.date.available	2022-06-10T04:02:41Z
dc.date.issued	2021-01-01
dc.identifier.citation	Physics of Fluids, 2021, 33, (1)
dc.identifier.issn	1070-6631
dc.identifier.issn	1089-7666
dc.identifier.uri	http://hdl.handle.net/10453/158056
dc.description.abstract	Natural convection in a V-shaped section cavity heated from below and cooled from above is investigated experimentally for the first time in the literature. Temperature measurements using fast-response thermistors and flow visualization using the shadowgraph technology have been performed. The natural convection development in the cavity including the conductional, the transitional, and the fully developed stages is described. It is experimentally proven that the scaling law of the thermal boundary layer thickness is δT ∼(κt)1/2 and the scaling law of the plume velocity is vp ∼κRa7/15/l. Furthermore, the occurrence of Hopf bifurcation in the transition to chaos and the flow structure are also identified experimentally. The power spectral density of the temperature time series reveals that the dominant frequency of the oscillations of the unsteady flow depends on the Rayleigh number, which is quantified.
dc.language	English
dc.publisher	AMER INST PHYSICS
dc.relation.ispartof	Physics of Fluids
dc.relation.isbasedon	10.1063/5.0031104
dc.rights	info:eu-repo/semantics/restrictedAccess
dc.rights	The following article has been submitted to/accepted by [Name of Journal]. After it is published, it will be found at https://aip.scitation.org/doi/10.1063/5.0031104
dc.subject	01 Mathematical Sciences, 02 Physical Sciences, 09 Engineering
dc.subject.classification	Fluids & Plasmas
dc.title	Experimental study of natural convection in a V-shape-section cavity
dc.type	Journal Article
utslib.citation.volume	33
utslib.for	01 Mathematical Sciences
utslib.for	02 Physical Sciences
utslib.for	09 Engineering
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	*
dc.date.updated	2022-06-10T04:01:22Z
pubs.issue	1
pubs.publication-status	Published
pubs.volume	33
utslib.citation.issue	1

Abstract:

Natural convection in a V-shaped section cavity heated from below and cooled from above is investigated experimentally for the first time in the literature. Temperature measurements using fast-response thermistors and flow visualization using the shadowgraph technology have been performed. The natural convection development in the cavity including the conductional, the transitional, and the fully developed stages is described. It is experimentally proven that the scaling law of the thermal boundary layer thickness is δT ∼(κt)1/2 and the scaling law of the plume velocity is vp ∼κRa7/15/l. Furthermore, the occurrence of Hopf bifurcation in the transition to chaos and the flow structure are also identified experimentally. The power spectral density of the temperature time series reveals that the dominant frequency of the oscillations of the unsteady flow depends on the Rayleigh number, which is quantified.

Please use this identifier to cite or link to this item:

http://hdl.handle.net/10453/158056