Experimental study of heat, mass and momentum transfers in a spray in the TOSQAN facility
Emmanuel PORCHERON, Pascal LEMAITRE, Amandine NUBOER, Vincent ROCHAS et Jacques VENDEL - Congrès CFD4NRS (Benchmarking of CFD Codes for Application to Nuclear Safety), 05/09/06 au 07/09/06, Munich, Allemagne.
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 simulate 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 study the interaction of a water spray injection used as a mitigation mean in order to reduce containment pressure and to produce a mixing of air, steam and hydrogen induced by spray entrainement and condensation on droplet. In order to have a better understanding of heat and mass transfers between spray droplets and gas and to analyse mixing effects due to spray activation, we performe detailed measurements of the two phases flow.