Fast Reactor Multiphysics and Uncertainty Propagation within WIMS
| Autor: | Tim Ware, Robert Mason, Brendan Tollit, Jean Lavarenne, Peter C. Smith, Robert Gregg, Ray Perry, Alan Charles, Ben Lindley, Una Davies |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Coupling
Propagation of uncertainty sfr-uam Physics QC1-999 020209 energy Nuclear engineering Multiphysics Interface (computing) wims Nuclear data 02 engineering and technology 7. Clean energy 01 natural sciences 010305 fluids & plasmas High fidelity 0103 physical sciences 0202 electrical engineering electronic engineering information engineering Benchmark (computing) trafic esfr-smart Uncertainty analysis |
| Zdroj: | EPJ Web of Conferences, Vol 247, p 06002 (2021) |
| Popis: | For liquid metal-cooled fast reactors (LMFRs), improved predictive modelling is desirable to facilitate reactor licensing and operation and move towards a best estimate plus uncertainty (BEPU) approach. A key source of uncertainty in fast reactor calculations arises from the underlying nuclear data. Addressing the propagation of such uncertainties through multiphysics calculations schemes is therefore of importance, and is being addressed through international projects such as the Sodium-cooled Fast Reactor Uncertainty Analysis in Modelling (SFR-UAM) benchmark. In this paper, a methodology for propagation of nuclear data uncertainties within WIMS is presented. Uncertainties on key reactor physics parameters are calculated for selected SFR-UAM benchmark exercises, with good agreement with previous results. A methodology for coupled neutronic-thermal-hydraulic calculations within WIMS is developed, where thermal feedback is introduced to the neutronic solution through coupling with the ARTHUR subchannel code within WIMS and applied to steady-state analysis of the Horizon 2020 ESFR-SMART project reference core. Finally, integration of reactor physics and fuel performance calculations is demonstrated through linking of the WIMS reactor physics code to the TRAFIC fast reactor fuel performance code, through a Fortran-C-Python (FCP) interface. Given the 3D multiphysics calculation methodology, thermal-hydraulic and fuel performance uncertainties can ultimately be sampled alongside the nuclear data uncertainties. Together, these developments are therefore an important step towards enabling propagation of uncertainties through high fidelity, multiphysics SFR calculations and hence facilitate BEPU methodologies. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|