Three-Dimensional Numerical Study of a Fluid-Kinetic Model for Respiratory Aerosols with Variable Size and Temperature

In this paper, we extend to the three-dimensional case numerical study previously performed in a two-dimensional framework for complex coupled fluid-kinetic model describing respiratory aerosols. The specificity of lies fact that it takes into account airway humidity and resulting hygroscopic effects on aerosol droplets, namely their size variation. air is described through system partial differential equations: incompressible Navier–Stokes equations velocity, convection-diffusion its temperature, water vapor mass fraction. distribution function obeys Vlasov-type equation depends standard kinetic variables, but also radius temperature variables. After discussing again implementation strategy, perform experiments, mainly branched structure looking like trachea first lung generation. This allows presentation various statistics behavior terms particle deposition, variation droplets. We observe outcome appears coherent with case. Finally, discuss several assumptions which may lead simplifications, such as fraction be considered constant throughout breathing conditions.