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Title:
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On the validity of the Boussinesq approximation in a tall differentially heated cavity with water
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Author:
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Kizildag, Deniz; Rodríguez Pérez, Ivette María; Oliva Llena, Asensio
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Other authors:
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Universitat Politècnica de Catalunya. Departament de Màquines i Motors Tèrmics; Universitat Politècnica de Catalunya. CTTC - Centre Tecnològic de la Transferència de Calor |
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Abstract:
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In the present work, the fluid flow and heat transfer inside an integrated solar collector installed on an advanced fac¸ade are investigated. According to Gray and Giorgini [1], the use of the Boussinesq approximation can be considered valid for variations of thermosphysical properties up to 10 % with respect to the mean value. In the configuration under study, there is a variation of about 20 % in the dynamic viscosity and 15 % in the thermal expansion coefficient.
Thus, the main objective of this work is to analyse the validity of the Boussinesq approximation for the turbulent natural convection flow of water in a rectangular
parallelepiped tank. The significance of the
Boussinesq effects is studied comparatively by means of detailed DNS simulations. |
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Abstract:
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Peer Reviewed |
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Subject(s):
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-Àrees temàtiques de la UPC::Edificació::Instal·lacions i acondicionament d'edificis::Instal·lacions de climatització
-Àrees temàtiques de la UPC::Matemàtiques i estadística::Matemàtica aplicada a les ciències
-Building -- Energy simulation
-Edificis -- Consum d'energia |
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Rights:
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Document type:
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Article - Submitted version
Conference Object |
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