This study investigates the impact of molecular thermal fluctuations on compressible
decaying isotropic turbulence using the unified stochastic particle (USP) method …

To generate or maintain a turbulent flow, one needs to introduce kinetic energy. This energy
injection necessarily fluctuates and these power fluctuations act on all turbulent excited …

We investigate the mixing of a passive scalar in an isotropic turbulent flow in the presence of
a time-periodic forcing. The results corroborate recent analytical predictions on the …

Viscous heating is investigated using high-resolution direct numerical simulations. Scaling
relations are derived and verified for different values of the Reynolds and Prandtl numbers …

This chapter is devoted to isotropic incompressible turbulence. The main features of related
theories are discussed, along with the recent results: energy spectrum and two-point …

Experimental observation of spontaneous temperature fluctuations in turbulent flows -
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Direct numerical simulations are carried out to investigate scalar mixing in an isotropic
turbulent flow with a time-periodic forcing. For high amplitudes of the modulation, it is shown …

In this thesis, we study the velocity and temperature fluctuations in a turbulent flow and their
implications on the propagation of acoustic waves in turbulence. The first part is devoted to …

In practically all flows, viscous friction leads to a loss of kinetic energy, which is converted
into heat. The evolution equation for the temperature θ contains therefore always a source …

Résumé La dynamique et l'évolution des fluctuations de température induites par la
dissipation visqueuse dans une turbulence isotrope sont étudiées utilisant des Simulations …