Experimental investigation in the TOSQAN facility of heat and mass transfers in a spray for containment application

Emmanuel Porcheron (1) , Pascal Lemaitre (1) , Amandine Nuboer (1) , Vincent Rochas (1) , Jacques Vendel (1)

1 IRSN/PSN-RES/SCA/LPMA - Laboratoire de physique et de métrologie des aérosols

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 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 perform detailed characterization of the two-phase flow.

Mots clés: Codes (standards), Computational fluid dynamics, Pressurized water reactors, Two phase flow, Gas mixture, Gas pressure, Thermal hydraulic containment studies, Loss of coolant accidents

Domaines: Physique [physics]

Emmanuel Porcheron, Pascal Lemaitre, Amandine Nuboer, Vincent Rochas, Jacques Vendel. Experimental investigation in the TOSQAN facility of heat and mass transfers in a spray for containment application. Nuclear Engineering and Design, 2007, 237 (15-17 SPEC. ISS.), pp.1862-1871. ⟨10.1016/j.nucengdes.2007.01.018⟩. ⟨irsn-04100632⟩