Water hammer program development and application for fast breeder reactor's sodium circus

Based on one-dimensional method of characteristics(MOC), a numerical model of pressure-wave propagation is presented. A special code is programmed to analyze and calculate water hammer resulted from rapid opening or closing of valve in the experimental sodium circus of fast breeder reactor(FBR). In the model, a new outer boundary condition, sodium-cavity is included. Model of bubble's discrete distribution is adopted to simulate generation and collapse of the bubble with the pressure's decreasing and increasing. The results demonstrate that the model of pressure-wave propagation is valid