Next approximation of the random walk theory for Brownian coagulation

详细信息	查看全文 | 推荐本文 |

• 作者：M.S. Veshchunov^a ; ^b ; ^{vms@ibrae.ac.ru} ; I.B. Azarov^a ; ^b
• 关键词：Brownian particles ; Coagulation ; Collision frequency ; Random walks ; Condensation in trap
• 刊名：Journal of Aerosol Science
• 出版年：2012
• 期刊代码：45_00218502
• 类别：ce
• 出版时间：May, 2012
• 卷：47
• 期：Complete
• 页码：70-77
• 文件大小：259 K

摘要

The new approach to Brownian coagulation theory, developed in the authors鈥?previous papers and based on the simple random walk theory (with a fixed elementary walk distance of migrating particles), is further improved by more realistic consideration of random walks with stochastically distributed lengths. The interpolation expressions derived in the simple random walk approach avoiding semi-empirical assumptions of the traditional models, are justified (within the calculation accuracy) by new calculation results obtained in the next approximation of the random walk theory. The developed approach being applied to the problem of heavy vapour molecules condensation in a large trap, results in the improved description of the condensation rate in the transition regime.