Interaction of a helium/air stratified layer with an air jet coming from below in the MISTRA facility: large scale experiments and scaling analysis
In the frame of the Organisation for Economic Cooperation and Development, Nuclear Energy Agency (OECD/NEA) the SETH-2 project, an experimental program, is being conducted in the MISTRA facility at the Commissariat à l’Energie Atomique et aux Energies Alternatives1-CEA (France) and in PANDA facility at the Paul Scherrer Institute-PSI (Switzerland). The aim of the project is to generate high quality experimental data that will be used for improving the modelling and validation of computational fluid dynamics (CFD) and lumped parameter (LP) computer codes designed to predict post-accident containment thermal-hydraulic conditions. The main objective of the proposed experimental program is to perform phenomena-oriented experiments in the large-scale, multi-compartment PANDA and MISTRA facilities, to investigate steam/gas distribution and hydrogen transport inside, a special focus will be given on the studies different mechanisms for stratification break-up such as condensation, natural convection, jet impingement, and spray. The present paper and communication will give an overview of the first test series called INITIALA-LOWMA. The objectives here are to study the phenomena of erosion by a low momentum air jet on the helium/air stratified layer located at the top of the facility. Different mass flow rates of air are used, inducing different regimes including pure diffusive mixing, global dilution and slow erosion processes, characterised by the interaction Froude number. The experimental results and a first analysis will be given.
Hydrogen risk CFD code validation gas mixing/stratification diffusive mixing global dilution erosion process MISTRA facility OECD/SETH-2 project
Jerome Brinster Etienne Studer Isabelle Tkatschenko Danielle Abdo
Commissariat à l’Energie Atomique et aux Energies Alternatives CEA Saclay, DEN, DANS, DM2S, SFME,Lab Commissariat à l’Energie Atomique et aux Energies Alternatives CEA Saclay, DEN, DANS, DM2S, SFME, La
国际会议
上海
英文
1859-1873
2010-10-10（万方平台首次上网日期，不代表论文的发表时间）