Abstract
The results of numerical simulations are used to investigate the effects of the mass-loading ratio and the droplet time constant on the velocity and temperature statistics in a two-phase homogeneous shear turbulence. The fuel vapor generated by the evaporation of the droplets reacts with the oxidizer carrier gas through a single-step, second-order reaction. The carrier phase is simulated in the Eulerian frame using direct numerical simulation, whereas the droplets are tracked in a Lagrangian manner. It is shown that the turbulence kinetic energy and its small-scale viscous dissipation rate increase with the decrease of either the mass-loading ratio or the droplet time constant. The opposite trend is observed for the early variations of the extra dissipation, which results from the drag. It appears that the velocity and temperature e uctuations of the dispersed phase can be reasonably described by Gaussian distribution. The increase of the mass loading ratio increases both the mean temperature of the carrier phase and the Lagrangian mean temperature difference between the phases. The increase of the droplet time constant however decreases the former while increasing the latter.
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