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Simulation de l'écoulement dispersé vapeur/gouttes dans des conditions d'APRP

Abstract : In a loss of coolant accident (LOCA), a dispersed flow of vapor and droplets occurs downstream of the rewet front which propagates through the fuel assemblies. These assemblies can be deformed with some blocked subchannels. In this article, the objective is to numerically analyze (using the NECTAR code) the influence of the vapor deviation on the heat transfer in two blocked subchannels (b=61% and 90%) under LOCA's representative conditions. The total internal heat dissipation is evaluated, and the contributions of the different mechanisms involved are analyzed
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https://hal.univ-lorraine.fr/hal-03529904
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Submitted on : Monday, January 17, 2022 - 4:56:54 PM
Last modification on : Monday, February 28, 2022 - 9:47:19 AM
Long-term archiving on: : Monday, April 18, 2022 - 9:08:21 PM

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Juan Esteban Luna Valencia, Arthur Oliveira, Alexandre Labergue, Tony Glantz, Georges Repetto, et al.. Simulation de l'écoulement dispersé vapeur/gouttes dans des conditions d'APRP. 29e Congrès français de thermique, Société Française de Thermique, Jun 2021, Belfort, France. ⟨10.25855/SFT2021-037⟩. ⟨hal-03529904⟩

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