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Communication Dans Un Congrès Année : 2023

Assessment of Neptune_CFD Applied to the Study of a Passive Safety Condenser: Modeling and First Validation Elements

Jorge Perez
  • Fonction : Auteur
Clément Liegeard
  • Fonction : Auteur
Franck Morin
  • Fonction : Auteur
Nicolas Merigoux
  • Fonction : Auteur
Jérôme Lavieville
  • Fonction : Auteur
Chaï Koren
  • Fonction : Auteur
Nicolas Sobecki
  • Fonction : Auteur
Michael Montout
  • Fonction : Auteur
Thomas Prusek
  • Fonction : Auteur
Pierre Gaillard
  • Fonction : Auteur

Résumé

Innovative systems are being considered for its application in Generation III and III+ concepts aiming safety enhancement and cost reduction by means of decreasing operator intervention dependency, maintenance and the redundancies of active systems. Several passive systems designs are studied such as a particular solution of a safety condenser where the residual heat of the core is removed by condensing the steam from the secondary circuit through a tube bundle immersed in a cooling pool. The application of numerical tools (such as the system code CATHARE) in the study of safety related transients with these systems is led by CEA, EDF and FRAMATOME in a conjointly effort. The main activity is code development and validation for the description of the condensation physics in the secondary and low pressure boiling in the cooling pool. On a numerical multiscale approach, CFD solutions are being assessed as well, foreseeing an eventual up-scaling to system codes to enrich the validation process. In this work, first steps towards the application of neptune_cfd for a safety condenser configuration are presented, including a contribution to its condensation model validation by confronting it against experimental data. The model implemented in the code for the condensation within tubes is described, and some selected experiences from the separate effects test bench COTURNE are chosen to be simulated. Results of the simulations are presented from which some conclusions are drawn, in addition, perspectives for further validation are discussed.
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Dates et versions

cea-04415567 , version 1 (24-01-2024)

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Citer

Jorge Perez, Bruno Raverdy, Clément Liegeard, Franck Morin, Nicolas Merigoux, et al.. Assessment of Neptune_CFD Applied to the Study of a Passive Safety Condenser: Modeling and First Validation Elements. 20th International Topical Meeting on Nuclear Reactor Thermal Hydraulics (NURETH-20), Aug 2023, Washington, United States. pp.632-644, ⟨10.13182/NURETH20-40275⟩. ⟨cea-04415567⟩
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