压水堆环形燃料结构热工水力分析方法研究

摘要

A typical Qinshan Phase‐Ⅱ PWR plant was selected as the base case for methodology study of thermal‐hydraulic analysis for the best array of annular fuel assembly applied in the PWR core .A range of arrays from 11 × 11 to 15 × 15 for differ‐ent sizes was investigated by using a sub‐channel analyzer named SAAF .On the consid‐eration of minimum departure from nucleate boiling ratios , pressure drops and fuel temperatures ,the most promising option was found to be the 13 × 13 array of annular fuel assembly .The calculation results in this paper provide initial calculation model for correlative analysis .%以秦山二期压水堆为参考堆型，对压水堆环形燃料结构进行热工水力分析方法研究。应用SAAF程序分析了从11×11到15×15等5种不同排列方式中不同尺寸的环形燃料棒的热工水力性能，综合最小偏离泡核沸腾比、压降和燃料芯块温度等参数确定了环形燃料组件最佳排列方式为13×13。本文研究结果为相关专业分析提供了初始计算模型。