Environmental pollution is one of the most critical issues of our time, as it leads to the deterioration of human health, the degradation of flora and fauna, and the suppression of vegetation. To study and predict the process of the spread of harmful substances in the surface layer of the atmosphere, a mathematical model has been developed that takes into account: the decrease in the concentration of pollutants in the atmosphere due to decomposition and photochemical transformation; changes in wind patterns over time and depending on the orography of the area; changes in the diffusion coefficient and the turbulent mixing coefficient vertically under stable and unstable stratification. The model is based on the fundamental laws of fluid mechanics, such as the conservation of mass, momentum, and impulse. Additionally, a calculation methodology is used that considers hydrodynamic factors of weather and climate, such as the capture of aerosol particles by plants, interaction with the ground, changes in wind speed and direction, as well as the turbulence coefficient both vertically and horizontally. To ensure a high order of accuracy and stability of the difference schemes, a semi-implicit finite-difference scheme and the "direct"method are applied to integrate the given problem.
| Mualliflar | Tashtemirova , N., Таштемирова , Н. |
|---|---|
| Jurnal | Ҳисоблаш ва амалий математика муаммолари |
| Nashr sanasi | 2025-03-22 |
| Son | 1 |
| Betlar | 57-76 |
| Til | Rus |
| DOI | 10.71310/pcam.1_63.2025.05 |
DOI: 10.71310/pcam.1_63.2025.05 · Maqolaning asl sahifasi
wind speed and direction, decrease in the concentration of pollutants, deposition velocity, direct method, semi-implicit difference scheme, скорость и направление ветра, убыль концентрации загрязняющих веществ, скорость осаждения, метод прямых, полунеявная разностная схема
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