Analytical research method of mathematical models of energy flow in water ecosystems of a nuclear plant

by

V.A. Moroz1, D.V. Moiseev1, N.A. Moroz2

1Sevastopol State University, RF, Sevastopol, Universitetskaya St., 33

2JSC VNIIAES, RF, Moscow, Ferghanskaya St., 25

 E-mail: DVMoiseev@sevsu.ru

DOI: 10.33075/2220-5861-2025-1-100-108

UDC 551.583                                                              

EDN: https://elibrary.ru/ppzoap

Abstract:

A comparative analysis of mathematical models of heat exchange in the “water -atmosphere” system has been performed in order to select the most accurate convergence with the measurement data. As a result of the analysis of mathematical models of energy flows in aquatic ecosystems, it can be noted that the smallest temperature differences are obtained by the adapted TRITOX model, the standard deviation is 0,8 and 1,0°С, which is acceptable and does not exceed the margin of error. This discrepancy in values results from the specific heat exchange flows in the “atmosphere–water–bottom” system due to the high thermal load of the NPP on the environment, which creates a special microclimate in the area of location. The TRITOX model was adapted to the conditions of the cooling reservoir of the NPP. The adapted mathematical model can be used to predict the hydrothermal and hydrochemical conditions of water bodies of the NPP technical water supply systems in case of possible changes in the NPP operating modes (including emergency ones), environmental parameters in the future and in the design of STV for new nuclear power plants.

The results of modeling the hydrothermal regime of a cooling reservoir with a VVER-1000 reactor unit are presented. The present work is relevant because mathematical methods can be used to predict the impact of both natural processes and anthropogenic factors on the condition of the adjacent water area of the NPP.

Keywords: mathematical models of energy flows, heat transfer models, descriptions of water temperature changes, and aquatic ecosystems of nuclear power plants

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