NDLI: Thermal Stratification and Mixing in an Open Water Pool by Submerged Mixtures of Steam and Air

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Timothy, L. Norman Park, Hyun-Sik Shripad, T. Revankar Ishii, Mamoru Joseph, M. Kelly
Copyright Year	2006
Abstract	Phenomena associated with jet-plume condensation of steam-air mixtures in a large subcooled pool of water have implications in predicting global system parameters, such as the containment pressure, in light water reactors. A scaled down, reduced pressure suppression pool was designed to study condensation and mixing phenomena using scaled test conditions obtained from RELAP5 code results of a loss of coolant accident in a simplified boiling water reactor. Results from the experiments were compared with the TRACE code predictions which reveal deficiencies in the code to predict the pool thermal stratification as TRACE was not initially developed for predicting such phenomena. A dimensionless boundary map was plotted from several experimental runs of pure steam injection to determine conditions when the pool transits from being a homogeneously mixed volume to being a thermally stratified one. Steam-air mixture injection cases for single horizontal venting indicated that above a pool temperature of 40 °C with air mass flow rates below 0.1 g/s the pool can attain thermal stratification.
Sponsorship	Nuclear Engineering Division
Starting Page	137
Ending Page	151
Page Count	15
File Format	PDF
ISBN	0791847837
DOI	10.1115/IMECE2006-15735
e-ISBN	0791837904
Volume Number	Energy Conversion and Resources
Conference Proceedings	ASME 2006 International Mechanical Engineering Congress and Exposition
Language	English
Publisher Date	2006-11-05
Publisher Place	Chicago, Illinois, USA
Access Restriction	Subscribed
Subject Keyword	Water Temperature Plumes (fluid dynamics) Light water reactors Thermal stratification Boiling water reactors Condensation Pressure Flow (dynamics) Subcooling Steam Coolants Accidents Containment
Content Type	Text
Resource Type	Article

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