Blyuss B.O., Dziuba S.V., Biliaiev N.N., Rusakova T.I. Methodological approaches to mathematical modeling of methane dispersion in atmospheric air

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Parent Category: Geo-Technical Mechanics, 2022

Category: Geo-Technical Mechanics, 2022, № 160

Geoteh. meh. 2022, 160, 123-132

https://doi.org/10.15407/geotm2022.160.123

 

METHODOLOGICAL APPROACHES TO MATHEMATICAL MODELING OF METHANE DISPERSION IN ATMOSPHERIC AIR

¹Blyuss B.O., ¹Dziuba S.V., ²Biliaiev N.N., ³Rusakova T.I.

¹Institute of Geotechnical Mechanics named by N. Poljakov of National Academy of Sciences of Ukraine, ²Ukrainian State University of Science and Technology, Lazaryan, ³Oles Honchar Dnipro National University 

UDC 504.5:629.33

Language: English

Abstract. Nowadays, the amount of methane entering the environment from various sources remains a serious problem. Methane is released into the atmosphere during the production, processing, storage, transportation and distribution of natural gas and crude oil. Coal mining, household and business waste, domestic and industrial wastewater treatment and landfills are the main sources of methane emissions. The development of the economy, the increase in the consumption of various products leads to an increased number of natural and household waste storages. Currently, much attention is paid to the methane collection and utilization. However, there is no growing tendency to reduce the sources of methane emissions. In this regard, to estimate level of methane concentration coming from the sources of its release remains an urgent task. The task is quite complex as it requires taking into account physical and meteorological parameters, as well as different types of sources and their location. The authors propose a numerical model based on the three-dimensional equation of mass transfer. The solution of this equation is performed by finite-difference methods, which allows obtaining methane concentration field at any height from the earth's surface. The developed numerical model allows taking into account location of the methane source, a point or area source, the change in air flow speed with height, atmospheric turbulent diffusion coefficients. On the basis of the developed numerical model, a computer code was created for the operational forecast of methane concentration fields under the influence of a pollution source. Based on the developed program, the model task of forecasting atmospheric air pollution zones during methane emission from the future waste storage facility was solved, the predicted pollution zone was obtained in the form of isolines of methane concentration. The obtained results can be useful while conducting many numerical calculations when new methods of selection, disposal and protection are implemented.
Keywords: methane concentration, mathematical modeling, numerical calculation, pollution level, waste storage.

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About authors:

Blyuss Borys Oleksandrovych, Corresponding Member of the National Academy of Sciences of Ukraine, Doctor of Technical Sciences (D.Sc.), Professor, Institute of Geotechnical Mechanics named by N. Poljakov of National Academy of Sciences of Ukraine (IGTM NAS of Ukraine), Dnipro, Ukraine.

Dziuba Serhii Volodymyrovych, Doctor of Technical Sciences (D.Sc.), Senior Researcher, Institute of Geotechnical Mechanics named by N. Poljakov of National Academy of Sciences of Ukraine (IGTM NAS of Ukraine), Dnipro, Ukraine.

Biliaiev Mykola Mykolaiovych, Doctor of Technical Sciences (D.Sc.), Professor of the Department Hydraulics and Water Supply, Ukrainian State University of Science and Technologies, Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.

Rusakova Tetiana Ivanіvna, Doctor of Technical Sciences (D.Sc.), Professor of the Department Professor of Life Safety, Oles Honchar Dnipro National University, Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.

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