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Computational Methodology of Sodium-Water Reaction Phenomenon in Steam Generator of Sodium-Cooled Fast Reactor (2009)
| Content Provider | CiteSeerX |
|---|---|
| Author | Takata, Takashi Yamaguchi, Akira Uchibori, Akihiro Ohshima, Hiroyuki |
| Abstract | A new computational methodology of sodium-water reaction (SWR), which occurs in a steam gen-erator of a liquid-sodium-cooled fast reactor when a heat transfer tube in the steam generator fails, has been developed considering multidimensional and multiphysics thermal hydraulics. Two kinds of reaction models are proposed in accordance with a phase of sodium as a reactant. One is the surface reaction model in which water vapor reacts directly with liquid sodium at the interface between the liquid sodium and the water vapor. The reaction heat will lead to a vigorous evaporation of liquid sodium, resulting in a reaction of gas-phase sodium. This is designated as the gas-phase reaction model. These two models are coupled with a multidimensional, multicomponent gas, and multiphase thermal hydraulics simulation method with compressibility (named the ‘SERAPHIM ’ code). Using the present methodology, a numerical investiga-tion of the SWR under a pin-bundle configuration (a benchmark analysis of the SWAT-1R experiment) has been carried out. As a result, the maximum gas temperature of approximately 1,300C is predicted stably, which lies within the range of previous experimental observations. It is also demonstrated that the maximum temperature of the mass weighted average in the analysis agrees reasonably well with the experimental result measured by thermocouples. The present methodology will be promising to establish a theoretical and mechanical modeling of secondary failure propagation of heat transfer tubes due to such as an overheating rupture and a wastage. |
| File Format | |
| Journal | J. Nucl. Sci. Tech |
| Language | English |
| Publisher Date | 2009-01-01 |
| Access Restriction | Open |
| Subject Keyword | Sodium-cooled Fast Reactor Computational Methodology Liquid Sodium Steam Generator Sodium-water Reaction Phenomenon Heat Transfer Tube Present Methodology Water Vapor Maximum Temperature Seraph Code Pin-bundle Configuration Multiphysics Thermal Hydraulics Steam Generator Fails Secondary Failure Propagation Steam Gen-erator Mechanical Modeling Overheating Rupture Liquid-sodium-cooled Fast Reactor Gas-phase Reaction Model Swat-1r Experiment New Computational Methodology Benchmark Analysis Reaction Model Vigorous Evaporation Reaction Heat Numerical Investiga-tion Gas-phase Sodium Surface Reaction Model Maximum Gas Temperature Previous Experimental Observation Sodium-water Reaction Multiphase Thermal Hydraulics Simulation Method Experimental Result Multicomponent Gas |
| Content Type | Text |
| Resource Type | Article |
