Conjugate natural convection in a vertically divided square enclosure by a corrugated solid partition into air and water regions

Priam, SS; Ikram, MM; Saha, S; Saha, SC

Conjugate natural convection in a vertically divided square enclosure by a corrugated solid partition into air and water regions

Priam, SS Ikram, MM Saha, S

Saha, SC

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Publisher:: Elsevier
Publication Type:: Journal Article
Citation:: Thermal Science and Engineering Progress, 2021, 25, pp. 1-18
Issue Date:: 2021-10-01

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Field	Value	Language
dc.contributor.author	Priam, SS
dc.contributor.author	Ikram, MM
dc.contributor.author	Saha, S https://orcid.org/0000-0002-9962-8919
dc.contributor.author	Saha, SC
dc.date.accessioned	2022-03-01T05:18:23Z
dc.date.available	2022-03-01T05:18:23Z
dc.date.issued	2021-10-01
dc.identifier.citation	Thermal Science and Engineering Progress, 2021, 25, pp. 1-18
dc.identifier.issn	2451-9049
dc.identifier.issn	2451-9049
dc.identifier.uri	http://hdl.handle.net/10453/154939
dc.description.abstract	The purpose of this study is to investigate conjugate natural convection inside a partitioned differentially heated square enclosure. A corrugated heat-conducting solid partition of three different values of thickness and three different materials is selected. The partition divides the empty spaces of the enclosure into two fluid zones and those zones are filled with air and water, respectively. The governing Navier-Stokes and energy equations are numerically solved by means of the finite element method. The effects of corrugation amplitude, corrugation frequency, thermal conductivity, position and thickness of the corrugated solid partition along with the variation of Rayleigh numbers based on the properties of air on thermal and flow fields have been depicted through contour plots of temperature and stream function, respectively. The average Nusselt number along the hot wall and the average temperatures of both air and water in their respective domains have also been examined to observe the influence of the above variations. The change of corrugation amplitude, thermal conductivity, position and thickness of the corrugated solid partition has considerable effects on heat transfer performance with increasing Rayleigh number. Out of those controlling parameters, it is found that increasing partition thermal conductivity enhances thermal performance by up to 25%. However, the variation of corrugation frequency of the partition as a function of Rayleigh number does not seem to be significant for heat transfer enhancement.
dc.language	English
dc.publisher	Elsevier
dc.relation.ispartof	Thermal Science and Engineering Progress
dc.relation.isbasedon	10.1016/j.tsep.2021.101036
dc.rights	info:eu-repo/semantics/closedAccess
dc.title	Conjugate natural convection in a vertically divided square enclosure by a corrugated solid partition into air and water regions
dc.type	Journal Article
utslib.citation.volume	25
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.consider-herdc	false
dc.date.updated	2022-03-01T05:18:20Z
pubs.publication-status	Published
pubs.volume	25

Abstract:

The purpose of this study is to investigate conjugate natural convection inside a partitioned differentially heated square enclosure. A corrugated heat-conducting solid partition of three different values of thickness and three different materials is selected. The partition divides the empty spaces of the enclosure into two fluid zones and those zones are filled with air and water, respectively. The governing Navier-Stokes and energy equations are numerically solved by means of the finite element method. The effects of corrugation amplitude, corrugation frequency, thermal conductivity, position and thickness of the corrugated solid partition along with the variation of Rayleigh numbers based on the properties of air on thermal and flow fields have been depicted through contour plots of temperature and stream function, respectively. The average Nusselt number along the hot wall and the average temperatures of both air and water in their respective domains have also been examined to observe the influence of the above variations. The change of corrugation amplitude, thermal conductivity, position and thickness of the corrugated solid partition has considerable effects on heat transfer performance with increasing Rayleigh number. Out of those controlling parameters, it is found that increasing partition thermal conductivity enhances thermal performance by up to 25%. However, the variation of corrugation frequency of the partition as a function of Rayleigh number does not seem to be significant for heat transfer enhancement.

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http://hdl.handle.net/10453/154939