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Etude des transferts de chaleur, de masse et d'aérosols pour des conditions d'aspersion dans les enceintes de confinement


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Titre du congrès :ICONE 15th International Conference on Nuclear Engineering Ville du congrès :Nagoya Date du congrès :22/04/2007

Type de document > *Congrès/colloque

Mots clés > aérosols, aspersion, thermohydraulique, TOSQAN

Unité de recherche > IRSN/DSU/SERAC

Auteurs > LEMAITRE Pascal, MARCHAND Denis, NUBOER Amandine, PORCHERON Emmanuel, VENDEL Jacques

Date de publication > 26/04/2007

Résumé

TOSQAN is an experimental program undertaken by the Institut de Radioprotection et de Sûreté Nucléaire (IRSN) in order to perform thermal hydraulic containment studies. The TOSQAN facility is a large enclosure devoted to simulating typical accidental thermal hydraulic flow conditions in nuclear Pressurized Water Reactor (PWR) containment. The TOSQAN facility, which is highly instrumented with non-intrusive optical diagnostics, is particularly adapted to nuclear safety CFD code validation (Porcheron et al., 2003). The present work is devoted to studying the interaction of a water spray injection used as a mitigation means in order to reduce the gas pressure and temperature in the containment, to produce gases mixing and washout of fission products. In order to have a better understanding of heat and mass transfers between spray droplets and the gas mixture, and to analyze mixing effects due to spray activation, we performed detailed characterization of the two-phase flow.