Verification of iterative matrix solutions for multipoint kinetics equations
| Autor: | Giuseppe Palmiotti, J. Tommasi |
|---|---|
| Přispěvatelé: | CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) (CEA-DES (ex-DEN)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Service de Physique des Réacteurs et du Cycle (SPRC), Département Etude des Réacteurs (DER), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) (CEA-DES (ex-DEN)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Idaho National Laboratory (INL), CADARACHE, Bibliothèque |
| Rok vydání: | 2019 |
| Předmět: |
[PHYS.NUCL] Physics [physics]/Nuclear Theory [nucl-th]
[PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th] [PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex] Computer science 020209 energy 02 engineering and technology [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex] 01 natural sciences 010305 fluids & plasmas Matrix (mathematics) Software implicit matrix methods 0103 physical sciences 0202 electrical engineering electronic engineering information engineering Applied mathematics Matrix coefficient business.industry multipoint kinetics equations Solver Stiff equation Nuclear Energy and Engineering Nuclear reactor core 13. Climate action Transient (oscillation) business Interpolation |
| Zdroj: | Annals of Nuclear Energy Annals of Nuclear Energy, Elsevier Masson, 2018, 124, pp.357-371 Annals of Nuclear Energy, 2018, 124, pp.357-371 |
| ISSN: | 0306-4549 |
| DOI: | 10.1016/j.anucene.2018.09.036 |
| Popis: | International audience; Multipoint kinetic equation systems have been solved numerically using matrix algebra software and 1st to 4th order implicit schemes based on single-step matrix propagators. These matrix schemes have been validated successfully on demanding point kinetics benchmarks with various prescribed reactivity insertions. Verification tests have also been performed on a simple 3-region fast reactor core model with asymmetric step or ramp reactivity insertions and cross-checked with the multipoint kinetics SACRE code developed at INL and based on existing and validated stiff ODE solver packages. Accurate results can be obtained at a limited time expense. The reason for intriguing results obtained in some transients has been elucidated and linked to the multipoint matrix coefficient interpolation method during the transient. |
| Databáze: | OpenAIRE |
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