Experimental investigation in the TOSQAN facility of heat and mass transfers in a spray for containment application |
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Authors: | Emmanuel Porcheron Pascal Lemaitre Amandine Nuboer Vincent Rochas Jacques Vendel |
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Affiliation: | aInstitut de Radioprotection et de Sûreté Nucléaire (IRSN), BP 68, 91192 Gif-sur-Yvette Cedex, France |
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Abstract: | 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. |
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