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Atomic Energy

, Volume 125, Issue 2, pp 112–118 | Cite as

Radiative and Convective Heat Transfer in the Gas Cavity of VVER-1200 Melt Trap

  • D. D. Kamenskaya
  • O. V. Tarasov
  • A. S. Filippov
  • D. K. Valetov
Article

Heat transfer in the gas cavity of the melt trap for the VVER-1200 core is studied. A model problem is solved numerically in a configuration where the cavity boundaries are close to that obtained after the formation of the melt pool. Heat transfer by radiation is calculated by three methods: in the approximation of a transparent medium taking account of the angular coefficients of radiation emission of sections of the cavity boundaries, by the DTRM method suitable for calculating radiation transfer in a medium with arbitrary optical density, and by the diffusion method in the Rosseland approximation. It is shown that the dominant mechanism is thermal radiation; the contribution of convection of the gas is relatively small. The influence of the choice of computational method on heat transfer in a gas cavity with different absorption is evaluated.

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  • D. D. Kamenskaya
    • 1
  • O. V. Tarasov
    • 1
  • A. S. Filippov
    • 1
  • D. K. Valetov
    • 1
  1. 1.Nuclear Safety InstituteRussian Academy of Sciences (IBRAE RAN)MoscowRussia

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