Experimental and numerical investigation of turbulent natural convection in a large air-filled cavity

Abstract : We investigate experimentally and numerically the turbulent natural convection flow that develops in a differentially heated cavity of height H = 1, width W = H and depth D = 0.32H, submitted to a temperature difference between the active vertical walls equal to 15 K resulting in a characteristic Rayleigh number equal to 1.5 x109. In the experiment temperature is measured by 25 µm micro-thermocouples and velocity by a laser Doppler Anemometer. BNoth 2D and 3D LES and 3D DNS are performed. DNS uses a Chebyshev spectral method and LES a finite volume method with a local subgrid diffusivity model. Numerical simulations are performed for both adiabatic conditions and experimentally measured temperature on the horizontal walls. Time-averaged quantities and turbulent statistics in the median vertical plane are presented and compared.
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Article dans une revue
International Journal of Heat and Fluid Flow, Elsevier, 2004, 25, pp.824-832. 〈10.1016j.ijheatfluidflow.2004.04.003〉
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https://hal.archives-ouvertes.fr/hal-00132458
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Soumis le : mercredi 21 février 2007 - 15:20:55
Dernière modification le : lundi 18 mars 2019 - 17:24:01

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Jacques Salat, S. Xin, Patrice Joubert, A. Sergent, F. Penot, et al.. Experimental and numerical investigation of turbulent natural convection in a large air-filled cavity. International Journal of Heat and Fluid Flow, Elsevier, 2004, 25, pp.824-832. 〈10.1016j.ijheatfluidflow.2004.04.003〉. 〈hal-00132458〉

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