Mathematical modeling of the kinematics of chemical droplets when pulverizing with a sprayer based on a new two-fluid turbulent model

Abstract

A mathematical modeling and numerical solution of the motion of the droplets of chemical reagents outflowing from the pneumatic sprayer are developed in the article. A new efficient two-fluid turbulence model is used to simulate turbulent flow. The mass fraction of liquid in the gas stream is considered small. Therefore, the effect of the liquid phase on the dynamics of air is ignored. The "parabolize" system of hydrodynamic equations is solved for the gas flow. For this, a marching method of integrating equations is used. The Lagrange approach is used to find the droplet trajectories. It is shown that the new turbulence model can be successfully applied to study two-phase submerged jets. The solutions obtained made it possible to determine a pattern of the field treatment by chemical reagents and define the sprayer's optimal parameters.