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Título:
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Direct and large eddy simulations of non-Oberbeck-Boussinesq effects in a turbulent tall water-filled differentially heated cavity
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Autor/a:
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Kizildag, Deniz; Rodríguez Pérez, Ivette María; Trias Miquel, Francesc Xavier; 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; Universitat Politècnica de Catalunya. TUAREG - Turbulence and Aerodynamics in Mechanical and Aerospace Engineering Research Group |
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Abstract:
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The present work first submits to investigation the non-Oberbeck-Boussinesq (NOB) effects in a tall water-filled differentially heated cavity by means of direct numerical simulations. The results reveal that if NOB effects are considered, the flow is no longer symmetric as the transition point moves downstream on the hot wall and upstream on the cold wall. Afterwards, the assessment of the large eddy simulation models is performed in order to test their capabilities for not only capturing the complex phenomena like transition to turbulence, turbulent mixing, and interaction between the boundary layers, but also for reproducing the NOB effects. The performance of different subgrid-scale models is assessed. |
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Abstract:
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Peer Reviewed |
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Materia(s):
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-Àrees temàtiques de la UPC::Enginyeria mecànica::Mecànica de fluids
-Turbulence-- Numerical simulation
-Non-Oberbeck-Boussinesq
-Turbulent natural convection
-Direct numerical simulation
-Large eddy simulation
-Turbulència -- Simulació numèrica |
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Derechos:
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Tipo de documento:
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Artículo - Versión publicada
Objeto de conferencia |
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