The Development and Application of Operating Analysis Platform for Natural Circulation under Ocean Condition
On the basis of thermal non-equilibrium, non-homogeneous, drift flux model and space and time dependent neutron kinetics model, the operating analysis platform for natural circulation (NC) under ocean condition is established. The additional pressure drop induced by ocean condition is illustrated by modifying the mixture momentum equation, the nodal pressure solution is used to solve the pressure matrix, the non-isothermal friction factor model is preferred to calculate friction factor, and the influence of shaking motion to that is also taken into account. The local loss coefficient is calculated as a function of Reynolds number. The two-group, 3-D neutron kinetics model is established. A nonlinear iterative semi-analytical nodal method is used to solve diffusion equation. With the platform, the nuclear machinery NC operating characteristic under ocean condition is investigated. The results show that the shorter the shaking period is, and the bigger the amplitude is, the more the influence is. With the same shaking period and amplitude, the influence of pitching motion is more serious. The oscillation period of operational parameter for pitching motion is the same as the pitching period, while that of rolling motion is the half. Deflection of steam generator operational parameter may happen in transverse heeling motion.
Ocean condition Natural circulation
Yu Lei Yan Binghuo Chen Yuqing
Department of Nuclear Science and Engineering, Naval Unversity of Engineering, Wuhan 430033, China
国际会议
ISSNP2008、CSEPC、ISOFIC2008(第二届21世纪和谐核电系统国际会议、第四届电厂控制中认知系统工程方法国际会议暨第三届未来核电厂仪表与控制国际会议)
哈尔滨
英文
213-217
2008-09-08（万方平台首次上网日期，不代表论文的发表时间）