NUMERICAL STUDY OF TEMPERATURE TRANSPORT IN HOMOGENEOUS ISOTROPIC TURBULENCE

This paper presents DNS results on heat transport in homogeneous isotropic turbulence. This study is focussing on the Lagrangian uid turbulence statistics (Lagrangian correlations functions) which are crucial for the analysis and the modeling of the uid turbulent properties along discrete particle trajectories. Finally, a velocity-scalar Lagrangian stochastic approach is proposed and evaluated from the DNS results