Development and Application of a Diffusion-Inertia Modelfor Calculating Aerosol Particle Depositionfrom Turbulent Flows

摘要

Abstract—Three-dimensional simulation of experiments on aerosol particle deposition in a tur-bulent flow is carried out.The k-turbulence model and the diffusion inertia model of particletransport and deposition were used in the simulation. The range of flow velocities and particlesizes is typical for the diffusion and turbophoresis deposition mechanisms. Deposition of particlesin a turbulent flow is considered for cases of a direct vertical pipe and for a 90° bend in which theturbophoresis is coupled with centrifugal forces. The calculation results are in good agreement withexperimental data. Deviations of results are comparable with those of discrete particle modeling.