【摘要】 基于Saxena试验获得窄缝通道骤冷前沿推进速率,采用RELAP5程序对实验进行模拟,模拟结果表明程序高估了骤冷前沿推进速率。以两相动量守恒方程和Griffith矩形窄缝通道漂移流速度模型为基础,建立窄缝通道相间漂移流摩擦模型。该模型考虑了窄缝通道几何特征对相间摩擦的影响,能更好地预测低流速下窄缝通道再淹没骤冷前沿推进速率,同时明确了影响窄缝通道骤冷前沿推进速率的关键因素之一。更多还原

【Abstract】 This paper simulates the Saxena experiment by the RELAP5 code, and the quench front velocity is overestimated during the simulation. Then this paper constitutes the narrow channel drift flux interfacial friction model based on the Momentum conservation equation and rectangular narrow channel drift flux velocity founded by Griffith. This model reflects the effects on the interfacial friction characteristics from the narrow geometry, so the quench front velocity can be estimated well, meanwhile one of the key factors for the quench front velocity during the narrow channel reflood has been found, which is also the important basis for developing the narrow channel reflood model.更多还原