Eulerian multi-fluid modeling for the numerical simulation of polydispersedense liquid sprays

In this Note, we derive from the kinetic level a Eulerian multi-fluid model for the simulation of polydisperse dense sprays of vaporizing liquid dropl ets. This yields an extension of the sectional method developed by Tambour et al. and justified by Laurent et al., to dense sprays where droplets of v arious sizes, and various velocities due to varying inertia, can coalesce. The velocity partial collisional integrals are first evaluated on Gaussian distribution of velocity and covering the whole range of droplet sizes. The final model is obtained by letting the velocity dispersion go to zero, all owing the collisional integrals to be pre-calculated. (C) 2001 Academie des sciences/Editions scientifiques et medicales Elsevier SAS.