In the Best-Estimate Plus Uncertainty (BEPU) framework, the use of best-estimate code requires to go through a Verification, Validation and Uncertainty Quantification process (VVUQ). The relevance of the experimental data in relation to the physical phenomena of interest in the VVUQ process is crucial. Adequacy analysis of selected experimental databases addresses this problem. The outcomes of the analysis can be used to select a subset of relevant experimental data, to encourage designing new experiments or to drop some experiments from a database because of their substantial lack of adequacy. The development of a specific transparent and reproducible approach to analyze the relevance of experimental data for VVUQ still remains open and is the topic of this contribution. In this paper, the concept of adequacy initially introduced in the OECD/NEA SAPIUM (Systematic APproach for model Input Uncertainty quantification Methodology) activity is formalized. It is defined through two key properties, called representativeness and completeness, that allows considering the multifactorial dimension of the adequacy problem. A new systematic approach is then proposed to analyze the adequacy of a set of experimental databases. It relies on the introduction of two sets of criteria to characterize representativeness and completeness and on the use of multi-criteria decision analysis method to perform the analysis. Finally, the approach is applied in the framework of the new OECD/NEA ATRIUM activity which includes a set of practical IUQ exercises in thermal-hydraulics to test the SAPIUM guideline in determining input uncertainties and forward propagating them on an application case. It allows evaluating the adequacy of eight experimental databases coming from the Super Moby-dick, Sozzi-Sutherland and Marviken experiments and identifying the most adequate ones.

A systematic approach for the adequacy analysis of a set of experimental databases. Application in the framework of the ATRIUM activity / Baccou, J.; Glantz, T.; Ghione, A.; Sargentini, L.; Fillion, P.; Damblin, G.; Sueur, R.; Iooss, B.; Fang, J.; Liu, J.; Yang, C.; Zheng, Y.; Ui, A.; Saito, M.; Mendizábal Sanz, R.; Bersano, A.; Mascari, F.; Skorek, T.; Tiborcz, L.; Hirose, Y.; Takeda, T.; Nakamura, H.; Choi, C.; Heo, J.; Petruzzi, A.; Zeng, K.; Xie, Z.; Wu, X.; Eguchi, H.; Pangukir, F.; Breijder, P.; Franssen, S.; Perret, G.; Clifford, I. D.; Coscia, T. M.; Di Maio, F.; Zio, E.; Pedroni, N.; Zhang, J.; Freixa, J.; Rizzo, F.; Ciurluini, C.; Giannetti, F.; Adorni, M.. - In: NUCLEAR ENGINEERING AND DESIGN. - ISSN 0029-5493. - 421:(2024), pp. 1-16. [10.1016/j.nucengdes.2024.113035]

A systematic approach for the adequacy analysis of a set of experimental databases. Application in the framework of the ATRIUM activity

Rizzo, F.;Ciurluini, C.;Giannetti, F.
Penultimo
;
2024

Abstract

In the Best-Estimate Plus Uncertainty (BEPU) framework, the use of best-estimate code requires to go through a Verification, Validation and Uncertainty Quantification process (VVUQ). The relevance of the experimental data in relation to the physical phenomena of interest in the VVUQ process is crucial. Adequacy analysis of selected experimental databases addresses this problem. The outcomes of the analysis can be used to select a subset of relevant experimental data, to encourage designing new experiments or to drop some experiments from a database because of their substantial lack of adequacy. The development of a specific transparent and reproducible approach to analyze the relevance of experimental data for VVUQ still remains open and is the topic of this contribution. In this paper, the concept of adequacy initially introduced in the OECD/NEA SAPIUM (Systematic APproach for model Input Uncertainty quantification Methodology) activity is formalized. It is defined through two key properties, called representativeness and completeness, that allows considering the multifactorial dimension of the adequacy problem. A new systematic approach is then proposed to analyze the adequacy of a set of experimental databases. It relies on the introduction of two sets of criteria to characterize representativeness and completeness and on the use of multi-criteria decision analysis method to perform the analysis. Finally, the approach is applied in the framework of the new OECD/NEA ATRIUM activity which includes a set of practical IUQ exercises in thermal-hydraulics to test the SAPIUM guideline in determining input uncertainties and forward propagating them on an application case. It allows evaluating the adequacy of eight experimental databases coming from the Super Moby-dick, Sozzi-Sutherland and Marviken experiments and identifying the most adequate ones.
2024
adequacy analysis; ATRIUM activity; completeness analysis; experimental databases; multicriteria decision problem; representativeness analysis
01 Pubblicazione su rivista::01a Articolo in rivista
A systematic approach for the adequacy analysis of a set of experimental databases. Application in the framework of the ATRIUM activity / Baccou, J.; Glantz, T.; Ghione, A.; Sargentini, L.; Fillion, P.; Damblin, G.; Sueur, R.; Iooss, B.; Fang, J.; Liu, J.; Yang, C.; Zheng, Y.; Ui, A.; Saito, M.; Mendizábal Sanz, R.; Bersano, A.; Mascari, F.; Skorek, T.; Tiborcz, L.; Hirose, Y.; Takeda, T.; Nakamura, H.; Choi, C.; Heo, J.; Petruzzi, A.; Zeng, K.; Xie, Z.; Wu, X.; Eguchi, H.; Pangukir, F.; Breijder, P.; Franssen, S.; Perret, G.; Clifford, I. D.; Coscia, T. M.; Di Maio, F.; Zio, E.; Pedroni, N.; Zhang, J.; Freixa, J.; Rizzo, F.; Ciurluini, C.; Giannetti, F.; Adorni, M.. - In: NUCLEAR ENGINEERING AND DESIGN. - ISSN 0029-5493. - 421:(2024), pp. 1-16. [10.1016/j.nucengdes.2024.113035]
File allegati a questo prodotto
File Dimensione Formato  
Baccou_A systematic approach_2024.pdf

solo gestori archivio

Tipologia: Versione editoriale (versione pubblicata con il layout dell'editore)
Licenza: Tutti i diritti riservati (All rights reserved)
Dimensione 3.47 MB
Formato Adobe PDF
3.47 MB Adobe PDF   Contatta l'autore
Baccou_post print_A systematic approach_2024.pdf

embargo fino al 01/06/2026

Tipologia: Documento in Post-print (versione successiva alla peer review e accettata per la pubblicazione)
Licenza: Creative commons
Dimensione 1.37 MB
Formato Adobe PDF
1.37 MB Adobe PDF   Contatta l'autore

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1706196
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 0
  • ???jsp.display-item.citation.isi??? 0
social impact