The greatest threat of the hazardous chemical release is posed by a cloud of contaminated air that spreads under the influence of wind near the soil surface. There is a problem of predicting the contaminated zone parameters in order to ensure safety. Normally, various methods are used to calculate the concentration of a hazardous impurity for this purpose. However, the obtained results correlate poorly often with each other and with the available experimental data. The purpose of this work is to assess the applicability of theoretical methods for calculating the parameters of the contamination zone formed as a result of the hazardous substance evaporation from the liquid strait surface. Several methods are used in this work: field tests, calculations using Gaussian distribution, solving a two-dimensional equation of turbulent diffusion with wind speed varying in height, and a computational experiment using the ANSYS software package. Results. The article presents the data of field tests with the spill of liquid chlorine, showing the distribution of impurities with the wind flow in the horizontal and vertical directions. It presents calculation results of the concentration of impurities entering the atmosphere from the surface of a liquid strait under conditions close to field tests. The applicability of the methods used to calculate the parameters of the contaminated zone are assessed taking into account the data of field tests. The correlation between the experimental and calculated data have been established to be observed in the range of specific concentrations only. The spectrum of high concentrations is better described by solving the two-dimensional equation of turbulent diffusion. The spectrum of average concentration values – by Gaussian distribution and computational experiment using the ANSYS software package. Conclusion. Understanding the specifics of computational methods application allows to predict the distribution of impurities in the surface air layer more accurately, taking into account the intensity of the emission, wind speed and surface roughness.
| Published in | International Journal of Atmospheric and Oceanic Sciences (Volume 6, Issue 1) |
| DOI | 10.11648/j.ijaos.20220601.12 |
| Page(s) | 7-12 |
| Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
| Copyright |
Copyright © The Author(s), 2024. Published by Science Publishing Group |
Emergency, Chlorine, Spill, Dispersion of Impurities
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APA Style
Gennadiy Kotov, Tatiana Sidorovich, Sergey Fisenko. (2022). Solution to the Problem of Gas Impurities Distribution in the Surface Layer of the Atmosphere with Stationary Modeling Methods Applied. International Journal of Atmospheric and Oceanic Sciences, 6(1), 7-12. https://doi.org/10.11648/j.ijaos.20220601.12
ACS Style
Gennadiy Kotov; Tatiana Sidorovich; Sergey Fisenko. Solution to the Problem of Gas Impurities Distribution in the Surface Layer of the Atmosphere with Stationary Modeling Methods Applied. Int. J. Atmos. Oceanic Sci. 2022, 6(1), 7-12. doi: 10.11648/j.ijaos.20220601.12
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Download@article{10.11648/j.ijaos.20220601.12,
author = {Gennadiy Kotov and Tatiana Sidorovich and Sergey Fisenko},
title = {Solution to the Problem of Gas Impurities Distribution in the Surface Layer of the Atmosphere with Stationary Modeling Methods Applied},
journal = {International Journal of Atmospheric and Oceanic Sciences},
volume = {6},
number = {1},
pages = {7-12},
doi = {10.11648/j.ijaos.20220601.12},
url = {https://doi.org/10.11648/j.ijaos.20220601.12},
eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijaos.20220601.12},
abstract = {The greatest threat of the hazardous chemical release is posed by a cloud of contaminated air that spreads under the influence of wind near the soil surface. There is a problem of predicting the contaminated zone parameters in order to ensure safety. Normally, various methods are used to calculate the concentration of a hazardous impurity for this purpose. However, the obtained results correlate poorly often with each other and with the available experimental data. The purpose of this work is to assess the applicability of theoretical methods for calculating the parameters of the contamination zone formed as a result of the hazardous substance evaporation from the liquid strait surface. Several methods are used in this work: field tests, calculations using Gaussian distribution, solving a two-dimensional equation of turbulent diffusion with wind speed varying in height, and a computational experiment using the ANSYS software package. Results. The article presents the data of field tests with the spill of liquid chlorine, showing the distribution of impurities with the wind flow in the horizontal and vertical directions. It presents calculation results of the concentration of impurities entering the atmosphere from the surface of a liquid strait under conditions close to field tests. The applicability of the methods used to calculate the parameters of the contaminated zone are assessed taking into account the data of field tests. The correlation between the experimental and calculated data have been established to be observed in the range of specific concentrations only. The spectrum of high concentrations is better described by solving the two-dimensional equation of turbulent diffusion. The spectrum of average concentration values – by Gaussian distribution and computational experiment using the ANSYS software package. Conclusion. Understanding the specifics of computational methods application allows to predict the distribution of impurities in the surface air layer more accurately, taking into account the intensity of the emission, wind speed and surface roughness.},
year = {2022}
}
TY - JOUR T1 - Solution to the Problem of Gas Impurities Distribution in the Surface Layer of the Atmosphere with Stationary Modeling Methods Applied AU - Gennadiy Kotov AU - Tatiana Sidorovich AU - Sergey Fisenko Y1 - 2022/04/09 PY - 2022 N1 - https://doi.org/10.11648/j.ijaos.20220601.12 DO - 10.11648/j.ijaos.20220601.12 T2 - International Journal of Atmospheric and Oceanic Sciences JF - International Journal of Atmospheric and Oceanic Sciences JO - International Journal of Atmospheric and Oceanic Sciences SP - 7 EP - 12 PB - Science Publishing Group SN - 2640-1150 UR - https://doi.org/10.11648/j.ijaos.20220601.12 AB - The greatest threat of the hazardous chemical release is posed by a cloud of contaminated air that spreads under the influence of wind near the soil surface. There is a problem of predicting the contaminated zone parameters in order to ensure safety. Normally, various methods are used to calculate the concentration of a hazardous impurity for this purpose. However, the obtained results correlate poorly often with each other and with the available experimental data. The purpose of this work is to assess the applicability of theoretical methods for calculating the parameters of the contamination zone formed as a result of the hazardous substance evaporation from the liquid strait surface. Several methods are used in this work: field tests, calculations using Gaussian distribution, solving a two-dimensional equation of turbulent diffusion with wind speed varying in height, and a computational experiment using the ANSYS software package. Results. The article presents the data of field tests with the spill of liquid chlorine, showing the distribution of impurities with the wind flow in the horizontal and vertical directions. It presents calculation results of the concentration of impurities entering the atmosphere from the surface of a liquid strait under conditions close to field tests. The applicability of the methods used to calculate the parameters of the contaminated zone are assessed taking into account the data of field tests. The correlation between the experimental and calculated data have been established to be observed in the range of specific concentrations only. The spectrum of high concentrations is better described by solving the two-dimensional equation of turbulent diffusion. The spectrum of average concentration values – by Gaussian distribution and computational experiment using the ANSYS software package. Conclusion. Understanding the specifics of computational methods application allows to predict the distribution of impurities in the surface air layer more accurately, taking into account the intensity of the emission, wind speed and surface roughness. VL - 6 IS - 1 ER -
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