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Physical Simulation of Dynamic Processes in Hydroeleastic Systems at Nuclear Power Stations

  • NUCLEAR POWER STATIONS
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Abstract

Basic approaches are outlined to solving complex engineering problems arising in the design and operation of power units at nuclear power stations (NPS) and based on large-scale physical simulation of dynamic conditions and parameters of dynamics and structural strength of modern power facilities. A procedure for physical simulation of specific dynamic processes in hydroelastic systems has been developed. Taking into account the identified distributions of pressure pulsations and flow rates on the surfaces of the structures of the investigated reactor plants (RU), hydrodynamic loads in various structures and facilities of modern power-machine buildings were determined considering the found distribution of fluctuations in flow pressure and velocity acting on the structure surfaces. The dynamic response parameters of the main structural members, such as dynamic strains and stresses, were obtained and analyzed. The effect of added masses of liquid, damping, and other factors on the dynamic processes in hydroelastic systems and ways for its reduction to increase the durability and service life of structures, first of all the critical elements of the studied power systems for each commissioned reactor, are determined. This approach is based on a comprehensive investigation of the interaction of a turbulent flow with the multicomponent structure of a reactor unit. The results of investigation confirmed the structure serviceability as to the relative error. The fitness for service of a structure during a specified operation time of the power unit was assessed. The implementation of the proposed approach involving large-scale physical simulation and, in many cases, numerical modeling, confirmed its effectiveness and the validity of the results obtained by the authors.

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Authors and Affiliations

  1. Blagonravov Mechanical Engineering Research Institute, Russian Academy of Sciences, 101990, Moscow, Russia

    S. M. Kaplunov, N. A. Makhutov & V. Yu. Fursov

  2. Afrikantov OKB Mechanical Engineering, 603074, Nizhny Novgorod, Russia

    V. A. Panov

  3. Bauman Moscow State Technical University, 105005, Moscow, Russia

    V. I. Solonin

Authors
  1. S. M. Kaplunov
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  2. N. A. Makhutov
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  3. V. Yu. Fursov
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  4. V. A. Panov
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  5. V. I. Solonin
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Corresponding authors

Correspondence to S. M. Kaplunov, V. A. Panov or V. I. Solonin.

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Translated by T. Krasnoshchekova

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Kaplunov, S.M., Makhutov, N.A., Fursov, V.Y. et al. Physical Simulation of Dynamic Processes in Hydroeleastic Systems at Nuclear Power Stations. Therm. Eng. 67, 461–468 (2020). https://doi.org/10.1134/S0040601520070034

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  • DOI: https://doi.org/10.1134/S0040601520070034

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