基于CFD动网格技术的闸阀快速关闭特性研究

Fast Closing Characteristics of Gate Valve Based on CFD Moving Grid Technique

以核电站DN150闸阀为研究对象,针对该阀门在5 s的快关过程中,特定开度下的阀门内部流动特性,利用CFD动网格技术开展闸阀瞬态关闭过程数值模拟研究,得出了闸阀内部流动的压力、速度、涡量等分布,为闸阀的内部结构设计优化及关闭速度优化改进提供理论依据。

Takes the DN150 gate valve of the nuclear power plant as the research object.Aiming at the internal flow characteristics of the valve body under the certain opening during the fast closing process of the valve with a closing time of 5 seconds,the CFD moving grid technique was used to carry out the numerical simulation of the gate valve's transient closing process.And the distribution of the flow pressure,the velocity and the vorticity in the gate valve was obtained,which provided the theoretical basis for the subsequent optimization of the internal structure design and closing velocity of the gate valve.