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Conjugate Simulation of Nongray Radiative Heat Transfer and Natural Convection in a Participating Media Using DOREM, REM2, and LES

DOI: 10.1615/ICHMT.2006.TurbulHeatMassTransf.1130
pages 539-542

Atsushi Sakurai
Department of Mechanical and Production Engineering, Niigata University, 8050 Ikarashi 2-no-cho, Nishi-ku, Niigata 950-2181, Japan

Shigenao Maruyama
Institute of Fluid Science, Tohoku University Katahira 2-1 -1, Aoba-ku Sendai, 980-8577 Japan

Masud Behnia
School of Mechanical and Manufacturing Engineering, University of New South Wales, Sydney 2052, Australia

Atsuki Komiya
Institute of Fluid Science, Tohoku University, 2-1-1, Katahira, Aoba-ku, Sendai 980-8577, Japan

Seigo Sakai
Department of Mechanical Engineering and Material Science, Yokohama National University, 79-5, Tokiwadai, Hodogaya-ku, Yokohama, 240-8501, Japan


A numerical simulation of combined natural convection and radiative heat transfer is presented. The Radiation Element Method by Ray Emission Model (REM2) and the Discrete Ordinates Radiation Element Method (DOREM) are used to solve the radiative heat transfer. The Large Eddy Simulation (LES) is used for the simulation of turbulent natural convection. Benchmark tests are conducted by comparing the results with experimental data. The effects of nongray radiative heat transfer on convection are scrutinized in a smoke-filled fire room. The numerical simulations show that radiative heat transfer plays a significant role on the flow patterns and temperature distributions in an enclosure containing participating medium.

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