Numerical Analysis of Supersonic Gas Jets into Liquid Pools with or without Chemical Reaction Using the SERAPHIM Program
For the safety assessment of a steam generator in sodium-cooled fast reactors, we have developed a computer program called SERAPHIM for the sodium-water chemical reaction and the compressible multicomponent multiphase flow under the failure of a heat transfer tube. In this study, numerical analysis of supersonic gas jets into liquid pools with or without chemical reaction was performed to validate the proposed numerical methods. The program uses a multi-fluid model and the HSMAC method modified for compressible multiphase flows. An interfacial drag force was calculated by the newly constructed model. The surface reaction model, which has been developed by the authors, was applied to evaluate the mass generation rate by the chemical reaction between the gas and liquid phase. As validation for a non-reaction problem, the experiment on the horizontal supersonic air jet into the water was analyzed. The numerical results showed that the velocity of the injected air decreased by the effect of the interfacial drag force, and then the air went upward because of the buoyancy. The horizontal penetration length of the air jet agreed with the experimental results very well. On the other hand, we analyzed the experiment on the vertical supersonic chlorine jet into the Na-NaCl mixture. In this analysis, the injected gas disappeared at a certain height by the chemical reaction. The estimated plume length showed good agreement with the experimental data. The numerical methods were found to be applicable to the multiphase flow with the supersonic gas jet and the chemical reaction.
Sodium-Cooled Fast Reactor Steam Generator Multiphase Flow Reaction Jet
Akihiro Uchibori Hiroyuki Ohshima Akira Watanabe
Japan Atomic Energy Agency 4002 Narita, O-arai, Ibaraki, Japan 311-1393 NDD Corp. 1-1-6 Jonan, Mito, Ibaraki, Japan 310-0803
国际会议
上海
英文
923-932
2010-10-10（万方平台首次上网日期，不代表论文的发表时间）