Modeling particle deposition and distribution in a chamber with a two-equation Reynolds-averaged Navier-Stokes model

摘要

A Lagrangian simulation for aerosol particle transport and deposition in a chamber is developed.The eddy interaction model(EIM)is adopted to generate the instantaneous turbulent fluctuating velocity field.It is found that a satisfactory result can be obtained only when the near-wall grid is sufficiently fine and the near-wall turbulent kinetic energy is damped effectively according to its component normal to the wall.Seven particle size groups ranging from 0.01 to 10 mu m are studied.A comparison between the current numerical model and a semi-empirical expression indicates that improved deposition fraction results were obtained.The particle deposition and particle fate in the chamber are also presented.