Response of small solid particles to the spatial structure of turbulence

Abstract

Particle response to the spatial structure of isotropic turbulence has been studied, in order to improve the model prediction of particle dispersion in turbulent flows when characteristic scales of flow field and particle are comparable. It is found that any particle would be transfered into a low vorticity region by the spatial structure of turbulence. However, effect of the spatial structure is limited to a certain range of time scale, because of different response to the spatial structure and time scale of turbulence.