Effects of a multi-physics coupling approach in monte carlo burnup calculations

Christian Castagna, Eric Cervi, Stefano Lorenzi, Antonio Cammi, Davide Chiesa, Massimiliano Nastasi, Monica Sisti, Ezio Previtali

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In nuclear reactor analysis, a relevant challenge is to achieve a suitable global description of nuclear systems through the coupling between neutronics and thermal-hydraulics. Indeed, a multi-physics approach improves the reactor safety analysis and the design of different types of nuclear systems; in addition, it allows the investigation of physical effects at different scales of time and space. In this context, a challenging task is the development of multi-physics tools to study the fuel burnup: these tools could improve the fuel management and estimate the amount of long-lived radionuclides in spent nuclear fuel for current and innovative nuclear reactors. This paper presents the study of a burnup analysis with the Serpent Monte Carlo code, that implements an external interface for the coupling with OpenFOAM, in order to import material temperatures and density field calculated by a thermal-hydraulics solver. In particular, we carried out a burnup analysis for the entire fuel cycle of a simplified fuel cell, composed by an UO2 pin surrounded by water. We evaluated the effects of the multi-physics coupling by comparing the results from simulations that adopt uniform distributions of material temperatures and densities, to those obtained with the multi-physics coupled approach. Particularly, we will show the differences in nuclide densities and the results from the transport calculation (neutron fluxes, reaction rates and criticality).

Original languageEnglish
Title of host publicationInternational Conference on Physics of Reactors, PHYSOR 2018
Subtitle of host publicationReactor Physics Paving the Way Towards More Efficient Systems
PublisherSociedad Nuclear Mexicana, A.C.
Pages2115-2125
Number of pages11
ISBN (Electronic)9781713808510
StatePublished - 1 Jan 2018
Externally publishedYes
Event2018 International Conference on Physics of Reactors: Reactor Physics Paving the Way Towards More Efficient Systems, PHYSOR 2018 - Cancun, Mexico
Duration: 22 Apr 201826 Apr 2018

Publication series

NameInternational Conference on Physics of Reactors, PHYSOR 2018: Reactor Physics Paving the Way Towards More Efficient Systems
VolumePart F168384-4

Conference

Conference2018 International Conference on Physics of Reactors: Reactor Physics Paving the Way Towards More Efficient Systems, PHYSOR 2018
Country/TerritoryMexico
CityCancun
Period22/04/1826/04/18

Keywords

  • Burnup analysis
  • Monte Carlo
  • Multi-Physics
  • OpenFOAM
  • Serpent

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