Study of poly-disperse aerosols deposition in turbulent flow with different Reynolds numbers  

作　　者：Zhichao Gao Yongzheng Chen Dandi Zhang Peng Chen Lili Tong Xuewu Cao 

机构地区：[1]School of Mechanical Engineering,Shanghai Jiao Tong University,Shanghai,200240,China [2]China Nuclear Power Technology Research Institute Co.,Ltd.,Shenzhen,518000,China

出　　处：《Particuology》2024年第6期32-43,共12页颗粒学报（英文版）

摘　　要：The turbulent deposition mechanism is one of the main mechanisms of aerosol deposition in nuclear power plant tubes.An experimental study of poly-disperse aerosol deposition in a horizontal tube is conducted,where the nominal Reynolds number(Re)is in a range of 3600–200,000.The aerosol deposition velocity first increases and then decreases with the increase of Res,and at high Re,particle rebound occurs during aerosol deposition in the tube.When the Re is low,the aerosol deposition velocity increases with the increase of aerosol diameter.When the Re is greater than 60,000,the deposition velocity first increases and then decreases with the increase of aerosol diameter due to particle surface rebound.A new aerosol deposition model has been developed by establishing the energy conservation equation of the rebounded particles in the viscous sublayer.The calculated results of the new model are in good agreement with these experimental results,and the error between the aerosol deposition velocity calculated by the model and experimental results is between−60%and 150%.

关 键 词：AEROSOL Turbulent deposition REBOUND High Reynolds number 

分 类 号：X51[环境科学与工程—环境工程]