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INTERACTION BETWEEN TURBULENCE AND RADIATIVE HEAT TRANSFER IN SUPERSONIC CHANNEL FLOW

Somnath Ghosh
Lehrstuhl für Aerodynamik, Technische Universität München Boltzmannstrasse 15, D-85748 Garching, Germany; Department of Aerospace Engineering, Indian Institute of Technology, Kharagpur, India

Rainer Friedrich
Lehrstuhl für Aerodynamik, Technische Universität München Boltzmannstrasse 15, D-85748 Garching, Germany

Benedicte Cuenot
CERFACS-CFC/Combustion, 42 Avenue G. Coriolis, 31057 Toulouse, France

Mouna El Hafi
Centre Energetique-Environnement CNRS - Faculté des Sciences et Techniques; Laboratoire de Géenie des Procédés des Solides Divisés, Ecole des Mines d'Albi, Carmaux, France

Аннотация

The interaction between turbulence in a minimal supersonic channel and radiative heat transfer is studied using largeeddy simulation. The working fluid is pure water vapour with temperature-dependent specific heats and molecular transport coefficients. Its line spectra properties are represented with a Statistical Narrow Band correlated-k (SNB-cK) model. Computations with a fictitious gray gas resulting in a higher optical thickness are also performed. Results for the mean flow variables, Reynolds stresses and certain terms of their transport equations indicate that thermal radiation effects counteract compressibility effects.