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2 Journal of New Technologies in Environmental Science

2 2023

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Modeling of the distribution of wind pressures of the building of the new safe confinement of the Chernobyl NPP

Skliarenko Dmytro, Krukovskyi Pavlo, Oliinyk Vladislav

Journal of New Technologies in Environmental Science

2023

Vol. 7, nr 1

24--27

Distribution of wind pressures on the outer surface of the New Safe Confinement (NSC) is necessary to determine the unorganized air exchange from the NSC (outward or inward) with radioactive aerosols to the environment, since it is not hermetically sealed. The results show the discrepancy between the wind pressure distribution on the NSC outer surface in the small-scale 1:300 physical model of the NSC tested in the wind tunnel and the literature data. The computational CFD model of the NSC external air flow was developed to determine the distribution of pressures on the NSC surface at different wind directions and speeds. The adequacy of the calculated model is confirmed by the proximity of calculated and literature data, as well as calculations according to the European standard.

Features of the heat and mass transfer of the underground structures of the Kiev metro with the ground mass and air environment

Deineko Andrii, Krukovskyi Pavlo, Frolov Gennadii

Journal of New Technologies in Environmental Science

2023

Vol. 7, nr 1

11--15

On the basis of the experimental values of temperature and absolute humidity of the tunnel air and the temperature of the walls of the rim of the deep tunnels of the Kyiv metro, the features and mutual influence of the earthen massif, the supply air environment and the operating modes of the mechanical system of reversible tunnel ventilation during the year are considered. On the basis of the CFD model, which takes into account the above processes of heat and mass transfer, ventilation modes have been determined that have made it possible to reduce the humidity of a group of tunnels of the Kyiv metro as much as possible.