Aerosol transportation in horizontal channels w让h gravitational effects  

作　　者：Yongwei Gao Ke Zhong Yanming Kang 

机构地区：[1]School of Environmental Science and Engineering, Donghua University, Shanghai 201620, China [2]School of Physics and Electronic-Electrical Engineering, Ningxia University, Yinchuan 750021 China

出　　处：《Particuology》2019年第3期159-168,共10页颗粒学报（英文版）

基　　金：the National Natural Science Foundation of China(Grant Nos.51578121,11662017 and 11762019).

摘　　要：Aerosol particle deposition in a narrow horizontal channel with gravitational effects is studied in the laminar flow regime. A general explic让 solution for predicting the aerosol transportation in the channel is obtained theoretically. The characteristics of the asymmetric concentratio n profiles and their dependence on gravitational settling are analyzed for different settings of the diffusion and sedimentation parameters. Aerosol deposition on the channel walls, which is influenced by a combination of mechanisms, is also analyzed. The results are compared with those from simplified models obtained in previous studies in which only diffusion or gravity was considered. The analysis reveals that the literature results regarding this aspect may be simplified with the present solution under specific conditions.

关 键 词：EXACT solution Combined DEPOSITION GRAVITATIONAL effect HORIZONTAL channel ASYMMETRIC distribution 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]