Dosage-based parameters for characterization of puff dispersion results

•A consistent set of dosage-based parameters for puff dispersion characterization is introduced.•The scalability and the validity of parameters are confirmed by systematic wind tunnel measurements.•The effect of the release duration on the parameters is investigated. A set of parameters is introduce...

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Bibliographic Details
Published in:Journal of hazardous materials 2015-02, Vol.283, p.178-185
Main Authors: Berbekar, Eva, Harms, Frank, Leitl, Bernd
Format: Article
Language:English
Subjects:
Air Pollutants - analysis
Air Pollution - statistics & numerical data
Atmosphere - chemistry
Atmospheric dispersion
Computer Simulation
Dimensional analysis
Dimensionless numbers
Dispersions
Dosage
Environmental Exposure - statistics & numerical data
Instantaneous release
Mathematical analysis
Mathematical models
Models, Chemical
Puff
Scalability
Scale models
Wind
Wind tunnel
Wind tunnels
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Summary:•A consistent set of dosage-based parameters for puff dispersion characterization is introduced.•The scalability and the validity of parameters are confirmed by systematic wind tunnel measurements.•The effect of the release duration on the parameters is investigated. A set of parameters is introduced to characterize the dispersion of puff releases based on the measured dosage. These parameters are the dosage, peak concentration, arrival time, peak time, leaving time, ascent time, descent time and duration. Dimensionless numbers for the scaling of the parameters are derived from dimensional analysis. The dimensionless numbers are tested and confirmed based on a statistically representative wind tunnel dataset. The measurements were carried out in a 1:300 scale model of the Central Business District in Oklahoma City. Additionally, the effect of the release duration on the puff parameters is investigated.
ISSN:0304-3894
1873-3336
DOI:10.1016/j.jhazmat.2014.09.020