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dc.contributor.author Corzo, Santiago Francisco
dc.contributor.author Ramajo, Damian Enrique
dc.contributor.author Nigro, Norberto Marcelo
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
dc.rights info:eu-repo/semantics/restrictedAccess
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
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
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
dc.conicet.fuente individual


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    Articulos de CENTRO DE INVESTIGACION DE METODOS COMPUTACIONALES

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info:eu-repo/semantics/restrictedAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)