Mathematical Modeling of Atmospheric Dispersion from Accidental Release of Ammonia (NH3) during Road Transport

Carolina Pinz Medronha; Ana Paula Rozado Gomes; Guilherme Jahnecke Weymar; Cícero Coelho de Escobar; Daniela Buske

doi:10.4028/p-P4v9qE

Paper Titles

Preface

Atmospheric Dispersion Modeling Using a Stochastic Wind Model
p.3

Implementation, Validation and Study Case of a Landscape Evolution Model Algorithm
p.13

Mathematical Modeling of Atmospheric Dispersion from Accidental Release of Ammonia (NH₃) during Road Transport
p.25

Analysis under Uncertainty with the Monte Carlo Method Applied to a Bioheat Transfer Problem with Coupled Deep Brain Stimulation Lead
p.37

Numerical Study of the Influence of the Geometric Parameters of a Radial Crystalizer Using a Multiscale CFD Model
p.47

Performance of an Oscillating Water Column Wave Energy Converter Integrated with Three Types of Harbor Protection Structures
p.63

Maximizing Efficiency of Earth-Air Heat Exchangers with Galvanized Blocks
p.75

Computational Modeling of an Earth-Air Heat Exchanger Integrated with Phase Change Materials: A Case Study Performed for the Viamão City, Rio Grande do Sul State, Brazil
p.85

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Mathematical Modeling of Atmospheric Dispersion from Accidental Release of Ammonia (NH₃) during Road Transport

Abstract:

This work aimed to analyze the atmospheric dispersion of ammonia gas (NH₃) caused by a hypothetical leak in a tanker truck due to an accident during its transport. These accidents with dangerous products in road transport are unpredictable and can generate severe impacts on communities' borders and the environment close to the accident site. With the use of mathematical models, it is possible to estimate, assuming that there was an accidental release, how far, from the point of leakage to the cloud formed in the atmosphere will move until it is diluted in a way that does not pose a danger of toxicity. In this work, the ALOHA software and Google Earth will be used to estimate the dispersion of this toxic gas in different scenarios, varying the stability class and the height of the leak orifice. Among the proposed and analyzed scenarios, the results show that the plume with the greatest reach was 948 m in the red zone (AEGL 3 - 1100 ppm or 769 mg/m³), 1900 meters in the orange zone (AEGL 2 - 160 ppm or 112 mg /m³) and 3600 meters in the yellow zone (AEGL 1 - 30 ppm or 21 mg/m³).

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Periodical:

Defect and Diffusion Forum (Volume 427)

Pages:

25-33

DOI:

https://doi.org/10.4028/p-P4v9qE

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Online since:

July 2023

Authors:

Carolina Pinz Medronha*, Ana Paula Rozado Gomes, Guilherme Jahnecke Weymar, Cícero Coelho de Escobar, Daniela Buske

Keywords:

ALOHA, Ammonia (NH₃), Atmospheric Dispersion, Dangerous Goods, Road Transport

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* - Corresponding Author

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