Heat, Mass and Aerosol Transfers in Spray Conditions for Containment Application

• Published in: Journal of Power and Energy Systems Vol. 2; no. 2; pp. 633 - 647
• Main Authors: PORCHERON, Emmanuel, LEMAITRE, Pascal, NUBOER, Amandine, VENDEL, Jacques
• Format: Journal Article
• Language: English
• Published: The Japan Society of Mechanical Engineers 2008
• Subjects: Aerosol; Containment; Droplets; Fluid dynamics; Fluid flow; Heat and Mass Transfers; Hydraulics; Pressurized water reactors; Spray; Sprayers; Sprays; Thermal Hydraulic; TOSQAN
• ISSN: 1881-3062; 1881-3062
• DOI: 10.1299/jpes.2.633

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.