Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-18-1629-2018 |
Maxwell-Stefan diffusion: a framework for predicting condensed phase diffusion and phase separation in atmospheric aerosol | |
Fowler, Kathryn; 39;Meara, Simon | |
2018-02-05 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS
![]() |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2018 |
卷号 | 18期号:3页码:1629-1642 |
文章类型 | Article |
语种 | 英语 |
国家 | England |
英文摘要 | The composition of atmospheric aerosol particles has been found to influence their micro-physical properties and their interaction with water vapour in the atmosphere. Core-shell models have been used to investigate the relationship between composition, viscosity and equilibration timescales. These models have traditionally relied on the Fickian laws of diffusion with no explicit account of non-ideal interactions. We introduce the Maxwell-Stefan diffusion framework as an alternative method, which explicitly accounts for non-ideal interactions through activity coefficients. e-folding time is the time it takes for the difference in surface and bulk concentration to change by an exponential factor and was used to investigate the interplay between viscosity and solubility and the effect this has on equilibration timescales within individual aerosol particles. The e-folding time was estimated after instantaneous increases in relative humidity to binary systems of water and an organic component. At low water mole fractions, viscous effects were found to dominate mixing. However, at high water mole fractions, equilibration times were more sensitive to a range in solubility, shown through the greater variation in e-folding times. This is the first time the Maxwell-Stefan framework has been applied to an atmospheric aerosol core-shell model and shows that there is a complex interplay between the viscous and solubility effects on aerosol composition that requires further investigation. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000424122600004 |
WOS关键词 | SECONDARY ORGANIC AEROSOL ; WATER DIFFUSION ; LIQUID ; STATE ; COEFFICIENT ; PARTICLES ; VISCOSITY |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/16200 |
专题 | 地球科学 |
作者单位 | Univ Manchester, Sch Earth & Environm Sci, Manchester M13 9PL, Lancs, England |
推荐引用方式 GB/T 7714 | Fowler, Kathryn,39;Meara, Simon. Maxwell-Stefan diffusion: a framework for predicting condensed phase diffusion and phase separation in atmospheric aerosol[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2018,18(3):1629-1642. |
APA | Fowler, Kathryn,&39;Meara, Simon.(2018).Maxwell-Stefan diffusion: a framework for predicting condensed phase diffusion and phase separation in atmospheric aerosol.ATMOSPHERIC CHEMISTRY AND PHYSICS,18(3),1629-1642. |
MLA | Fowler, Kathryn,et al."Maxwell-Stefan diffusion: a framework for predicting condensed phase diffusion and phase separation in atmospheric aerosol".ATMOSPHERIC CHEMISTRY AND PHYSICS 18.3(2018):1629-1642. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论