Drop kinetics in a turbulent flow: characteristic times and direct simulation

Description of kinetics of electrically charged and neutral microparticles carried by a turbulent medium is presented. For a single particulate (droplet), the hierarchy of characteristics time scales is done in a wide region of the governing parameters, especially at an arbitrary value of Knudsen criterium (i.e., of mean free path of molecule/particulate diameter ratio). For a multitude of particulates (neutral as well as charged), mass spectrum evolution is investigated on the basis of direct numerical simulation. A comparison of results so obtained with the available theories (derived by other investigators) is fulfilled. In addition, time evolution of the components of an optical Stokes vector is calculated for the case of the sound-ing radiation scattered by suspension. A possible application: visualization of aerosole turbulent flows.