Analysis of Ultra-fine Aerosol Deposition on Horizontal Surfaces
Kang Yanming(1),Rong Meili(1),Zhong Ke(1),Wang Mingxing(2)
(1,School of Environmental Science and Engineering, Donghua University, Shanghai 200061)
(2,Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029)

Abstract: Ultra fine aerosol particle deposition on a horizontal flat surface in industrial clean rooms is studied under special consideration of thermophoretic, diffusional and gravitational field. The airflow is two dimensional, parallel to the falt plate. The relations between local deposition velocity and particle diameter and the distance from the forward edge of the flat are analyzed and discussed, and the average deposition velocity distribution over the surface is also illustrated.
Keywrods: aerosol particle, thermophoresis, horizontal flow, deposition velocity .