THMT-12. Proceedings of the Seventh International Symposium On Turbulence Heat and Mass Transfer
DOI: 10.1615/ICHMT.2012.ProcSevIntSympTurbHeatTransfPal
ISBN Print: 978-1-56700-302-4
ISSN: 2377-2816
Dissolution of a light gas stratification in a safety containment model: computational study using the scale-adaptive k-ω-SST model of turbulence
pages 1891-1905
DOI: 10.1615/ICHMT.2012.ProcSevIntSympTurbHeatTransfPal.1930
RÉSUMÉ
The present work is concerned with numerical computations of the process of entrainment of a lower-density gas into a higher-density gas in the geometry of safety containment as encountered in nuclear engineering. Containment configurations differing in terms of the ratio of the buoyant to inertial forces (gradient Richardson number), molar fraction of the lower-density gas, erosion velocity and forced-convection velocity were considered. Turbulence models applied represent an eddy-resolving formulation adopted in line with the SAS (Scale-Adaptive Simulation) version of the k-ω-SST model.