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Turbulent 3D natural convection flows and interaction with surface radiation in air-filled cavity

DOI: 10.1615/ICHMT.2012.ProcSevIntSympTurbHeatTransfPal.1730
pages 1697-1708

Shihe Xin
Univ Lyon, CNRS, INSA-Lyon, Universite Claude Bernard Lyon 1, CETHIL UMR5008, F-69621, Villeurbanne, France

J. Chergui
LIMSI-CNRS, BP 133, F-91403 Orsay Cedex, France

Patrick Le Quere
LESTE UA CNRS 1098 Universite de Poitiers,40 av du Recteur Pineau,86022 Poitiers Cedex- France

Ren Dai
University of Shanghai for Science and Technology

Resumo

A DNS using spectral methods, parallel computing and code coupling has been performed for the interaction between surface radiation and turbulent natural convection in an air-filled cavity at RaH = 3 × 1010. Time-averaged fields and the corresponding rms are computed over 16 time units. Heat transfer and flow structure are analysed. Numerical results are compared with experimental data obtained at slightly higher RaH, 4 × 1010, and qualitative agreement is observed.

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