控制棒组件在流体环境中下落时所受阻力的计算  

Computation of Resistance Force of Dropping Control Rod Assembly under Environment of Fluid

作　　者：于建华[1] 魏泳涛[1] 孙磊[2] 李锡华[2] 

机构地区：[1]四川大学工程力学研究所,成都610065 [2]中国核动力研究设计院,成都610041

出　　处：《核动力工程》2001年第3期236-241,共6页Nuclear Power Engineering

摘　　要：基于流体力学和边界层理论，探讨了控制棒组件在下落过程中所受的流体阻力。对控制棒组件的 3种部件——控制棒束、驱动杆、星形爪在下落时所受的流体阻力分别按 SU/PG迎风修正的有限元数值方法及基于边界层理论的近似解析法进行求解，完成了控制棒组件下落过程的时程分析，并得出该组件的下落参数 (位置和速度 )与瞬时流体阻力的关系。Basing on fluid mechanics and boundary theory, the principle of the fluid resistance force acting upon the Rod Cluster Control Assembly (RCCA) are concerned. The numerical method of SU/PG FEM and the approximate analytical solution based on the boundary theory are introduced respectively for the computation of resistance force of RCCA (including Control Rodlets, Drive Rod and Spider) when dropping. The time history analysis of RCCA during its drop has been done, and the relationship between the dropping parameter (position and velocity) and the transient fluid resistance force is obtained.

关 键 词：反应堆 控制棒组件 落棒 流体阻力 计算 流体力学 安全 粘性摩擦阻力 

分 类 号：TL362[核科学技术—核技术及应用] TL33