Mixing state evolution of agglomerating particles in an aerosol chamber: Comparison of measurements and particle-resolved simulations

Chenchao Shou, Nicole Riemer, Timothy B. Onasch, Arthur J. Sedlacek, Andrew T. Lambe, Ernie R. Lewis, Paul Davidovits, Matthew West

Research output: Contribution to journalArticle

Abstract

This article presents a validation study of the stochastic particle-resolved aerosol model PartMC with experimental data from an aerosol chamber experiment. For the experiment, a scanning mobility particle sizer and a single-particle soot photometer were used to monitor the aerosol mixing state evolution of two initially externally mixed aerosol populations of ammonium sulfate and black carbon particles undergoing agglomeration. We applied an efficient optimization algorithm (ProSRS) to determine several unconstrained simulation parameters and were able to successfully reproduce number concentrations and size distributions of mixed particles that formed by agglomeration. The PartMC modeling approach in conjunction with the optimization procedure provides a tool for detailed comparisons of chamber experiments and modeling, where aerosol mixing state is the focus of investigation.

Original languageEnglish (US)
Pages (from-to)1229-1243
Number of pages15
JournalAerosol Science and Technology
Volume53
Issue number11
DOIs
StatePublished - Nov 2 2019

Fingerprint

Aerosols
Particles (particulate matter)
aerosol
Soot
simulation
agglomeration
Agglomeration
Photometers
experiment
Experiments
Ammonium Sulfate
photometer
soot
ammonium sulfate
black carbon
Carbon black
modeling
particle
comparison
Scanning

Keywords

  • Yannis Drossinos

ASJC Scopus subject areas

  • Environmental Chemistry
  • Materials Science(all)
  • Pollution

Cite this

Mixing state evolution of agglomerating particles in an aerosol chamber : Comparison of measurements and particle-resolved simulations. / Shou, Chenchao; Riemer, Nicole; Onasch, Timothy B.; Sedlacek, Arthur J.; Lambe, Andrew T.; Lewis, Ernie R.; Davidovits, Paul; West, Matthew.

In: Aerosol Science and Technology, Vol. 53, No. 11, 02.11.2019, p. 1229-1243.

Research output: Contribution to journalArticle

Shou, Chenchao ; Riemer, Nicole ; Onasch, Timothy B. ; Sedlacek, Arthur J. ; Lambe, Andrew T. ; Lewis, Ernie R. ; Davidovits, Paul ; West, Matthew. / Mixing state evolution of agglomerating particles in an aerosol chamber : Comparison of measurements and particle-resolved simulations. In: Aerosol Science and Technology. 2019 ; Vol. 53, No. 11. pp. 1229-1243.
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