本文采用实验和数值计算分析相结合的方法,研究了带定位格架棒束通道内过冷流动沸腾工况下临界热流密度(CHF)发生情况.提出了通过采用CFX4.4程序对带定位格架棒束通道内过冷流动沸腾计算来预测CHF发生位置的方法.结果表明,随着程序的发展和物理模型的完善,计算流体动力学方法(CFD)将成为核燃料棒束组件临界热流密度实验、设计和安全评估强有力的计算分析工具.
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