EFFECT OF BROWNIAN COAGULATION AND BROWNIAN DIFFUSION ON GRAVITATIONAL SETTLING OF POLYDISPERSE AEROSOLS
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概要
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The behavior of aerosol particles of sub-micron diameter undergoing Brownian coagulation, Brownian diffusion and gravitational settling was studied by numerically solving the equation of population balance and by experimentally observing the change of aerosol properties with time. In calculation, two dimensionless parameters, which are determined by the initial properties of aerosols and vessel dimension in which aerosols are suspended, were introduced to evaluate the magnitude of influence of Brownian coagulation and Brownian diffusion on gravitational settling. The results of numerical calculation were indicated by graphical representation, which is usable for quantitative estimation of the magnitude of these two effects. These computational results were found to be in good agreement with the experimental results obtained by an ultramicroscopic technique of particle size analysis.
- 公益社団法人 化学工学会の論文
著者
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Okuyama Kikuo
Department Of Chemical Engineering Faculty Of Engineering Hiroshima University
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Yoshida Tetsuo
Department Of Biotechnology Graduate School Of Agricultural And Life Sciences The University Of Toky
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Kousaka Yasuo
Department Of Chemical Engineering Osaka Prefecture University
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KOUSAKA YASUO
Department of Chemical Engineering, University of Osaka Prefecture
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NISHIO SHIGERU
Department of Chemical Engineering, University of Osaka Prefecture
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