Model and Numerical Algorithm for Monitoring and Forecasting Transfer and Diffusion of Active Aerosol Particles in the Atmosphere

Ravshanov, N.; Narzullayeva, Nigora; Muradov, Farrukh

doi:10.1109/icisct52966.2021.9670344

Cited by 2 publications

(3 citation statements)

References 6 publications

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“…It should be emphasized that the formulated problem (1)-( 5) was solved using the method of splitting by physical processes, that is, for the effective solution of the problem posed, it was split by physical processes -into the convection part, the diffusion part, and the part of the substance absorption in the atmosphere [19]. More details about the solution of the computational algorithm can be found in our publications [19][20][21].…”

Section: Solution Methodsmentioning

confidence: 99%

Studies of the influence of vegetation cover on the process of transfer and diffusion of harmful substances in the atmosphere

Shafiev,

Nazarov

2023

E3S Web Conf.

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A mathematical model is proposed to monitor and predict the concentration of harmful substances emitted from natural and anthropogenic sources of pollution; it can be used to estimate the capture of aerosol particles in the atmosphere by vegetation elements. The developed mathematical model makes it possible to more accurately predict the degree of environmental pollution and develop measures to reduce it. Using this model and the corresponding numerical algorithm for solving problems, computational experiments were conducted with real weather and climate factors obtained from online services. From the computational experiments conducted, the main parameters were determined; one of them is the influence of vegetation elements on the process of diffusion and transport of aerosol particles in the atmosphere, which plays a significant role in the process under consideration. To check the reliability of the proposed mathematical apparatus, computational experiments were performed and the results were compared with the results obtained by other researchers.

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Section: Solution Methodsmentioning

confidence: 99%

Studies of the influence of vegetation cover on the process of transfer and diffusion of harmful substances in the atmosphere

Shafiev,

Nazarov

2023

E3S Web Conf.

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“…Analysis of research and publications. Most of the studies and publications on the spread of clouds of hazardous substances in the event of an emergency release at enterprises concern the chemical industry [1,2]. This is due to a large number of enterprises of the chemical industry.…”

Section: Introductionmentioning

confidence: 99%

“…specify how the intensity of radionuclide release changes over time. With this approach, within the framework of the modeling an equation (1), it is possible to model different types of an emergency release: semi-continuous release, long-term release, instantaneous release. Boundary conditions for the modeling equation ( 1) are as follows:…”

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confidence: 99%

Modeling the Distribution of Emergency Release Products at a Nuclear Power Plant Unit

Biliaieva,

Levchenko,

Myshchenko

et al. 2024

A.I.S.

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Despite the fact that much attention is paid to the safe operation of nuclear power plants, there is a possibility of an accident with the release of radionuclides. This is especially true in Ukraine, where there is a threat of the damage to nuclear reactors as a result of military operations. It is impossible to research the distribution of products emergency releases radioactive substances in laboratory conditions. Therefore, the only tool for the development predicting of an accident is the modeling the spread of a radionuclides cloud. The purpose of the research is a modeling the distribution of emergency release products in a nuclear power plant unit, suitable for the operative assessment of a development an accident. Results of the research: The mathematical model of the distribution emission products of a nuclear power plant has been developed, which takes into account the value of the initial activity of emission products, the rate of the settling radioactive particles, the wind speed components, the intensity changes radionuclide emission over time. The technique for solving the boundary value problem of modeling in conditions of a complex shape of the computational domain, taking into account the presence of obstacles to the spread of emission products has been developed. The use of the velocity potential equation in evolutionary form allows us to speed up the calculation process. The chosen splitting scheme of an alternating-triangular method allows to find the speed potential according to the explicit form at each splitting step. This allowed software implementation of the CFD model. The visualized models of the emission cloud distribution allow to determine the radiation situation in any place of the emission product distribution zone. The developed model makes it possible to quickly predict the development of an accident in space and time, which makes it possible to take measures to protect people from exposure in the shortest possible time. Conclusions: The obtained emission cloud propagation models and their visualization make it possible to determine the state of environmental pollution under various initial conditions during the development of the accident.

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Model and Numerical Algorithm for Monitoring and Forecasting Transfer and Diffusion of Active Aerosol Particles in the Atmosphere

Cited by 2 publications

References 6 publications

Studies of the influence of vegetation cover on the process of transfer and diffusion of harmful substances in the atmosphere

Studies of the influence of vegetation cover on the process of transfer and diffusion of harmful substances in the atmosphere

Modeling the Distribution of Emergency Release Products at a Nuclear Power Plant Unit

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