Lagrangian simulation of a two phase turbulent round jet

A Lagrangian approach for the prediction of discrete particle dispersion in turbulent flows is presented. A number of particle trajectories are simulated and statistics are compiled to obtain mean quantities for comparisons with experimental data. Each trajectory is constructed using the fundamental law of dynamics whereby the fluctuating velocities which are involved, due to the random character of the flow field, are estimated with a (K-epsilon) model for the mean quantities of the turbulence, algebraic relations for the Reynolds tensor, a matrix attached to the particle trajectory, and a Frenkiel family of correlation functions for the simulaton of Eulerian and Lagrangian correlations. The influence of nonnegligible mass loading on the turbulent flow is taken into account by using extra source terms in the equations of the turbulence model. Comparisons between predictions and experimental data for a two-phase turbulent round jet are presented and proved to be satisfactory. 17 references