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dc.contributor.author
Corzo, Santiago Francisco
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dc.contributor.author
Ramajo, Damian Enrique
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dc.contributor.author
Nigro, Norberto Marcelo
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dc.date.available
2018-03-21T17:46:56Z
dc.date.issued
2016-09
dc.identifier.citation
Corzo, Santiago Francisco; Ramajo, Damian Enrique; Nigro, Norberto Marcelo; High-Rayleigh heat transfer flow: Thermal stratification analysis and assessment of Boussinesq approach; Emerald; International Journal Of Numerical Methods For Heat & Fluid Flow; 27; 9; 9-2016; 1928-1954
dc.identifier.issn
0961-5539
dc.identifier.uri
http://hdl.handle.net/11336/39528
dc.description.abstract
Purpose - The purpose of this paper is to assess the Boussinesq approach for a wide range of Ra (10 × 6 to 10 × 11) in two-dimensional (square cavity) and three-dimensional (cubic cavity) problems for air- and liquidfilled domains. Design/methodology/approach - The thermal behavior in "differentially heated cavities" filled with air (low and medium Rayleigh) and water (high Rayleigh) is solved using computational fluid dynamics (CFDs) (OpenFOAM) with a non-compressible (Boussinesq) and compressible approach (real water properties from the IAPWS database). Findings - The results from the wide range of Rayleigh numbers allowed for the establishment of the limitation of the Boussinesq approach in problems where the fluid has significant density changes within the operation temperature range and especially when the dependence of density with temperature is not linear. For these cases, the symmetry behavior predicted by Boussinesq is far from the compressible results, thus inducing a transient heat imbalance and leading to a higher mean temperature. Research limitations/implications - The main limitation of the present research can be found in the shortage of experimental data for very high Rayleigh problems. Practical implications - Practical implications of the current research could be use of the Boussinesq approach by carefully observing its limitations, especially for sensible problems such as the study of pressure vessels, nuclear reactors, etc. Originality/value - The originality of this paper lies in addressing the limitations of the Boussinesq approach for high Rayleigh water systems. This fluid is commonly used in numerous industrial equipment. This work presents valuable conclusions about the limitations of the currently used models to carry out industrial simulations.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Emerald
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Boussinesq
dc.subject
Cfd
dc.subject
Heat Transfer
dc.subject
High Rayleigh Flow
dc.title
High-Rayleigh heat transfer flow: Thermal stratification analysis and assessment of Boussinesq approach
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-03-07T15:55:34Z
dc.journal.volume
27
dc.journal.number
9
dc.journal.pagination
1928-1954
dc.journal.pais
Reino Unido
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dc.description.fil
Fil: Corzo, Santiago Francisco. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Centro de Investigaciones en Métodos Computacionales. Universidad Nacional del Litoral. Centro de Investigaciones en Métodos Computacionales; Argentina
dc.description.fil
Fil: Ramajo, Damian Enrique. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Centro de Investigaciones en Métodos Computacionales. Universidad Nacional del Litoral. Centro de Investigaciones en Métodos Computacionales; Argentina
dc.description.fil
Fil: Nigro, Norberto Marcelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Centro de Investigaciones en Métodos Computacionales. Universidad Nacional del Litoral. Centro de Investigaciones en Métodos Computacionales; Argentina
dc.journal.title
International Journal Of Numerical Methods For Heat & Fluid Flow
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.emeraldinsight.com/doi/abs/10.1108/HFF-05-2016-0176
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1108/HFF-05-2016-0176
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