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IRSN, Institut de radioprotection et de sûreté nucléaire

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Enhancing Nuclear Safety


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Heat, mass and aerosol transferts in spray conditions for containment application


Journal title : Journal of Power and Energy Systems
Volume : 2
Issue : 2
Pagination : 633-647
Publication date : 01/03/2008

Document type > *Article de revue

Keywords >

Research Unit > IRSN/DSU/SERAC/LECEV

Authors > LEMAITRE Pascal, NUBOER Amandine, PORCHERON Emmanuel, VENDEL Jacques

Publication Date > 01/03/2008

Summary

TOSQAN is an experimental program undertaken by the Institut de Radioprotection et de Surété Nucleaire (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. 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.


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