Exploring the tendency of Brownian agglomeration in polydispersed systems of solid atmospheric aerosols

Recent extensive research has focused on atmospheric aerosol systems, driven by their far-reaching implications for climate and public health, with a goal to identify optimal air quality management practices. This study employs Langevin dynamics to investigate the impact of size distribution and con...

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Bibliographic Details
Published in:Physics of fluids (1994) 2024-08, Vol.36 (8)
Main Authors: Osaci, Mihaela, Cacciola, Matteo, Gheorghe, Lavinia
Format: Article
Language:English
Subjects:
Aerosols
Agglomeration
Air quality
Dynamic models
Numerical integration
Parameter identification
Public health
Quality management
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Summary:Recent extensive research has focused on atmospheric aerosol systems, driven by their far-reaching implications for climate and public health, with a goal to identify optimal air quality management practices. This study employs Langevin dynamics to investigate the impact of size distribution and concentration of submicrometer solid aerosol particles on Brownian agglomeration tendencies within an isothermal, hydrostatically balanced atmosphere. To accomplish this, a Langevin dynamic model is devised, and parameters are carefully determined to ensure numerical integration precision, stability, and efficiency. Using this model, we numerically simulate the average agglomeration nucleus and overall agglomeration rate within the system while considering variations in the standard deviation of size distribution and volume fraction of aerosol particles.
ISSN:1070-6631
1089-7666
DOI:10.1063/5.0218974