Limits of the Oberbeck–Boussinesq approximation in a tall differentially heated cavity filled with water

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dc.contributor	Universitat Politècnica de Catalunya. Departament de Màquines i Motors Tèrmics
dc.contributor	Universitat Politècnica de Catalunya. CTTC - Centre Tecnològic de la Transferència de Calor
dc.contributor.author	Kizildag, Deniz
dc.contributor.author	Rodríguez Pérez, Ivette María
dc.contributor.author	Oliva Llena, Asensio
dc.contributor.author	Lehmkuhl Barba, Oriol
dc.date	2014-01-01
dc.identifier.citation	Kizildag, D. [et al.]. Limits of the Oberbeck–Boussinesq approximation in a tall differentially heated cavity filled with water. "International journal of heat and mass transfer", 01 Gener 2014, vol. 68, p. 489-499.
dc.identifier.citation	0017-9310
dc.identifier.citation	10.1016/j.ijheatmasstransfer.2013.09.046
dc.identifier.uri	http://hdl.handle.net/2117/21437
dc.language.iso	eng
dc.rights	Attribution-NonCommercial-NoDerivs 3.0 Spain
dc.rights	info:eu-repo/semantics/openAccess
dc.rights	http://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subject	Àrees temàtiques de la UPC::Enginyeria mecànica::Mecànica de fluids
dc.subject	Fluid mechanics
dc.subject	Turbulence
dc.subject	Non-Oberbeck–Boussinesq effects
dc.subject	Turbulent natural convection
dc.subject	Differentially heated cavity
dc.subject	Mecànica de fluids
dc.subject	Turbulència
dc.title	Limits of the Oberbeck–Boussinesq approximation in a tall differentially heated cavity filled with water
dc.type	info:eu-repo/semantics/draft
dc.type	info:eu-repo/semantics/article
dc.description.abstract	The present work assesses the limits of the Oberbeck–Boussinesq (OB) approximation for the resolution of turbulent fluid flow and heat transfer inside a tall differentially heated cavity of aspect ratio G = 6.67 filled with water (Pr = 3.27, Ra = 2.12e11). The cavity models the integrated solar collector-storage element installed on an advanced façade. The implications of the Oberbeck–Boussinesq approximation is submitted to investigation by means of direct numerical simulations (DNS) carried out for a wide range of temperature differences. Non-Oberbeck–Boussinesq (NOB) effects are found to be relevant, especially beyond the temperature difference of 30 °C, in the estimation of heat transfer, stratification, and flow configuration.
dc.description.abstract	Peer Reviewed

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