摘要
为了研究核电主汽阀关闭时流场的变化情况及阀板的受力情况,利用计算流体力学软件FLUENT对主汽阀二维简化模型的流场进行了稳态和不同关闭速度的动态数值模拟,得到了阀门的动态流场信息及阀板的受力分布曲线。通过分析可知,阀板两侧的压力差产生的摩擦力是决定阀门能否正常关闭的关键因素,关闭速度越快所受到的摩擦力越大。
In order to study the changes of the flow field and the force of the valve plate at the conditions of the nuclear main steam valve closing, the method of numerical simulation is used to calculate the 2D simplified model of flow field of main steam isolation valve （MSIV） with CFD software FLUENT, which includes static and dynamic simulation of different closing speed. It obtaines the dynamic flow field information of MSIV and the valve plate pressure distribution curve. According to the analysis result, the friction force produced by the pressure difference on both sides of the valve plate is the key factor to determine whether the valve closes normally or not~ the faster the valve closes, the greater the friction force is.
出处
《水电能源科学》
北大核心
2012年第8期139-142,共4页
Water Resources and Power
