Investigation on Sodium Droplet Impingement Phenomenon during Steam Generator Tube Failure Using MPS Method
During the steam generator tube failure accident of fast breeder reactors, droplets entrained by the high-speed gas impinge the tubes near the leak and cause the wastage of the tubes which can lead to secondary tube failure. In order to understand the damage by the impingement, single droplet impingement is simulated for three different fluids, I.e. Water, sodium and sodium hydroxide (NaOH), which are the main fluids in the droplets. A characteristic pressure is defined for the simulation result for the comparison with the existing correlations. It shows that Heymann correlation give good prediction of the pressure load up to 800 m/s. By adjusting the coefficient which depends on the property of the droplet fluid, the simulation results of sodium and sodium hydroxide shows an agreement with Heymann correlation. The effect of the deformation of the impinged target is preliminarily investigated. The deformation of the target surface lowers the pressure in the contact center. However, the peak pressure at the contact edge is increase by about 100％.
Fast breeder reactor steam generator tube failure wastage liquid droplet impingement MPSmethod
Jinbiao XIONG Seiichi KOSHIZUKA Mikio SAKAI Hiroyuki OHSHIMA
The University of Tokyo 7-3-1 Hongo Bunkyo-ku, Tokyo 113-8656, Japan Japan Atomic Energy Agency 4002 Oarai-machi, Higashi-Ibaraki, Ibaraki, Japan
国际会议
上海
英文
686-693
2010-10-10（万方平台首次上网日期，不代表论文的发表时间）