Towards modeling the impact of the aspect ratio in an energy model describing the transient flow boiling at high subcooling - CEA - Commissariat à l’énergie atomique et aux énergies alternatives Accéder directement au contenu
Communication Dans Un Congrès Année : 2023

Towards modeling the impact of the aspect ratio in an energy model describing the transient flow boiling at high subcooling

Résumé

Boiling crisis under transient heat input is a phenomenon of major interest for the safety of research nuclear reactors. Recently, a model for highly subcooled flow was developed by Nop et al. (2021), which assumes the existence of a homogeneous mantle exchanging with the heating wall and the bulk flow until its saturation. We present an extension of this approach, taking into account the increase of the bulk temperature during the transient. We demonstrate that, if the assumption of an isothermal bulk is valid under the experimental conditions of Nop et al. (2021), it is no longer the case for configurations with high aspect ratios (L/Dh), and thus for the application of the model to reactor geometries.
Fichier principal
Vignette du fichier
ROUMET_Abstract_ICMF_2023.pdf (385.61 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

cea-04440542 , version 1 (06-02-2024)

Identifiants

  • HAL Id : cea-04440542 , version 1

Citer

Elie Roumet, Raksmy Nop, Nicolas Dorville, Marie-Christine Duluc. Towards modeling the impact of the aspect ratio in an energy model describing the transient flow boiling at high subcooling. ICMF 2023 - 11th International Conference on Multiphase Flow, Apr 2023, Kobe, Japan. ⟨cea-04440542⟩
25 Consultations
4 Téléchargements

Partager

Gmail Facebook X LinkedIn More