Título:
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Non-Oberbeck-Boussinesq natural convection in a tall differentially heated cavity
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Autor/a:
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Kizildag, Deniz; Ventosa, Jordi; Rodríguez Pérez, Ivette María; Oliva Llena, Asensio
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Otros autores:
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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 |
Abstract:
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Turbulent flow in a water-filled rectangular parallelepiped tank of an integrated solar collector is analyzed by means of a set of two and three dimensional simulations. The geometry and the working conditions of the prototype yield an aspect ratio of Γ = 6:68, Rayleigh number of Ra = 2:2 x 10 11 and a Prandtl number of Pr = 3:42.
Diff erent coarse DNS simulations and LES simulations using the dynamic Smagorinsky
SGS and WALE model are presented. Validity of the Oberbeck-Boussinesq approximation
is questioned. Heat transfer and first and second order statistics are studied. |
Abstract:
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Peer Reviewed |
Materia(s):
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-Àrees temàtiques de la UPC::Física::Termodinàmica::Física de la transmissió de la calor -Heat--Convection, Natural -Convecció (Física) |
Derechos:
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Tipo de documento:
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Artículo - Versión publicada Objeto de conferencia |
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