title: Change in particle size distribution of fractal agglomerates during Brownian coagulation in the free-molecule regime.
abstract: Time evolution of particle size distribution of fractal agglomerates undergoing Brownian coagulation in the free-molecule regime was investigated. A simple analytical solution for the size distribution change was obtained by using the assumption that the size distribution during the coagulation process can be represented by a time-dependent log-normal function. The derived solution consists of three parameters of the log-normal distribution function. This study is believed to provide the first analytical solution for all the parameters of the log-normal distribution of fractal agglomerates undergoing coagulation in the free-molecule regime. To validate the derived solution, numerical computations were performed. The results were compared with the analytical solution and good agreement was obtained.
authors.affiliation: Department of Environmental Science and Engineering, Kwangju Institute of Science and Technology, 1 Oryong-dong, Puk-gu, Kwangju 500-712, Korea. shpark@aerosol.kjist.ac.kr
authors.forename: S H
authors.initials: SH
authors.lastname: Park
authors.forename: K W
authors.initials: KW
authors.lastname: Lee