FAST REACTOR MULTIPHYSICS AND UNCERTAINTY PROPAGATION WITHIN WIMS
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....
| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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EDP Sciences
2021-01-01
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| Series: | EPJ Web of Conferences |
| Subjects: | |
| Online Access: | https://www.epj-conferences.org/articles/epjconf/pdf/2021/01/epjconf_physor2020_06002.pdf |
| _version_ | 1818723002252001280 |
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| author | Lindley Ben Tollit Brendan Smith Peter Charles Alan Mason Robert Ware Tim Perry Ray Lavarenne Jean Davies Una Gregg Robert |
| author_facet | Lindley Ben Tollit Brendan Smith Peter Charles Alan Mason Robert Ware Tim Perry Ray Lavarenne Jean Davies Una Gregg Robert |
| author_sort | Lindley Ben |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-12-17T21:03:35Z |
| format | Article |
| id | doaj.art-a41b159550b04ffdbbb484b55bf958ac |
| institution | Directory Open Access Journal |
| issn | 2100-014X |
| language | English |
| last_indexed | 2024-12-17T21:03:35Z |
| publishDate | 2021-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Web of Conferences |
| spelling | doaj.art-a41b159550b04ffdbbb484b55bf958ac2022-12-21T21:32:39ZengEDP SciencesEPJ Web of Conferences2100-014X2021-01-012470600210.1051/epjconf/202124706002epjconf_physor2020_06002FAST REACTOR MULTIPHYSICS AND UNCERTAINTY PROPAGATION WITHIN WIMSLindley Ben0Tollit Brendan1Smith Peter2Charles Alan3Mason Robert4Ware Tim5Perry Ray6Lavarenne Jean7Davies Una8Gregg Robert9Wood Kings Point House, Queen Mother SquareWood Kings Point House, Queen Mother SquareWood Kings Point House, Queen Mother SquareWood Kings Point House, Queen Mother SquareWood Kings Point House, Queen Mother SquareWood Kings Point House, Queen Mother SquareWood Kings Point House, Queen Mother SquareWood Kings Point House, Queen Mother SquareUniversity of Cambridge Cambridge University Engineering DepartmentNational Nuclear Laboratory Preston LaboratoryFor 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.https://www.epj-conferences.org/articles/epjconf/pdf/2021/01/epjconf_physor2020_06002.pdfwimstraficsfr-uamesfr-smart |
| spellingShingle | Lindley Ben Tollit Brendan Smith Peter Charles Alan Mason Robert Ware Tim Perry Ray Lavarenne Jean Davies Una Gregg Robert FAST REACTOR MULTIPHYSICS AND UNCERTAINTY PROPAGATION WITHIN WIMS EPJ Web of Conferences wims trafic sfr-uam esfr-smart |
| title | FAST REACTOR MULTIPHYSICS AND UNCERTAINTY PROPAGATION WITHIN WIMS |
| title_full | FAST REACTOR MULTIPHYSICS AND UNCERTAINTY PROPAGATION WITHIN WIMS |
| title_fullStr | FAST REACTOR MULTIPHYSICS AND UNCERTAINTY PROPAGATION WITHIN WIMS |
| title_full_unstemmed | FAST REACTOR MULTIPHYSICS AND UNCERTAINTY PROPAGATION WITHIN WIMS |
| title_short | FAST REACTOR MULTIPHYSICS AND UNCERTAINTY PROPAGATION WITHIN WIMS |
| title_sort | fast reactor multiphysics and uncertainty propagation within wims |
| topic | wims trafic sfr-uam esfr-smart |
| url | https://www.epj-conferences.org/articles/epjconf/pdf/2021/01/epjconf_physor2020_06002.pdf |
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