核反应堆一回路系统水锤数值模拟

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Numerical Simulation of Water Hammer Characteristics for Integral Reactor Primary Circuit

1. Department of Nuclear Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, China;
2. Nuclear Power Institute of China, Chengdu, 610041, China

摘要: 采用特征线法,针对核反应堆一回路系统特点建立完整的数学物理方程和边界条件。自主开发WAHAP水锤计算程序,并对含止回阀的4泵并联系统在启动及切换工况下的水锤特性进行模拟计算。计算结果表明,所研究工况中有2个不同阶段存在阀瓣多次剧烈撞击阀座的过程和2种形式的压差震荡。
- 水锤 /
- 核反应堆 /
- 数值模拟 /
- 特征线法
Abstract: Based on the method of characteristic line,a set of closed mathematic expressions with reasonable boundary conditions of the nuclear reactor primary circuit has been established.WAHAP program has been developed,and numerical calculation is carried out on the check valve-induced water hammer phenomena in a four pumps paralleled feedwater system during the alternating startup process of parallel pumps.In this paper,we found that the valve disc stroke the valve seat at two different periods and there were two kinds of pressure vibration existed.
- Water hammer /
- Nuclear reactor /
- Numerical simulation /
- Method of characteristic line