Large eddy simulation of turbulent heated jets

Maxime Roger (1) , Pedro J. Coelho (2) , Carlos B. da Silva (2)

1 CETHIL - Centre d'Energétique et de Thermique de Lyon
2 IDMEC - Instituto de Engenharia Mecânica [Lisboa]

Large eddy simulations of turbulent heated jets have been carried out and validated against experimental data. The code employed in this work is based on the OpenFOAM platform. Heated jets with Reynolds number varying from 3800 to 8500 and with exit Froude numbers varying from 3500 to 13200 are simulated. The numerical results are validated against the experimental data provided by Anderson and Bremhorst [2002], and compared with the self-similarity laws derived by Chen and Rodi [1980] for the temperature and velocity. The validation tests are satisfactory and allow us to use the code with confidence for numerical investigations. A parametric study is presented in order to analyse the temperature influence on turbulence. It is observed that an increase of the temperature gradient decreases the turbulence intensity.

Domaines: Thermique [physics.class-ph]

Maxime Roger, Pedro J. Coelho, Carlos B. da Silva. Large eddy simulation of turbulent heated jets. ICHMT International Symposium on Advances in Computational Heat Transfer, Jul 2012, Bath, United Kingdom. ⟨hal-02062086⟩