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Validation of Aerosol Dynamics in a Well-Stirred Isothermal Enclosure

Published

Author(s)

Amy Mensch, Thomas Cleary

Abstract

Modeling of aerosol dynamics in fire simulations enables predictions of the effects of soot, such as visibility and detection, and the fate of soot, such as deposition and emissions. NIST's fire modeling tool, Fire Dynamics Simulator (FDS), has implemented computational schemes for aerosol transport, deposition and coagulation. Users rely on FDS's aerosol dynamics models to make predictions of smoke detection, visibility, tenability, deposition on surfaces for fire forensics, and smoke control for abatement. This study presents measurements from experiments in a well-stirred, isothermal enclosure using spherical aerosol particles across a range of initial aerosol conditions and fan flow settings. The measured reductions in particle number concentration are represented by a decay constant for each experiment. These results are compared to FDS predictions, and the sources of differences between the measurements and predictions are discussed.
Proceedings Title
17th International Conference on Automatic Fire Detection, AUBE '21
Conference Dates
September 20-23, 2021
Conference Location
Duisburg, DE

Keywords

soot deposition, soot modeling, aerosol coagulation, aerosol deposition

Citation

Mensch, A. and Cleary, T. (2021), Validation of Aerosol Dynamics in a Well-Stirred Isothermal Enclosure, 17th International Conference on Automatic Fire Detection, AUBE '21, Duisburg, DE (Accessed February 26, 2024)
Created September 30, 2021, Updated October 3, 2022