摘要
利用RELAP5程序建立分析模型,结合强迫循环工况转换自然循环工况的试验数据,对转换过程中的冷却剂温度变化速率和燃料棒的热应变进行计算分析。计算结果表明:结合RELAP5程序进行燃料棒的热应变分析是合适的;自然循环转换过程中燃料棒热应变的变化剧烈,对燃料棒的机械性能产生影响;结合RELAP5瞬态分析结果,也可以分析其他工况变化过程对燃料棒的热应力冲击问题。
The analytical model was created using the RELAP5 code,and the rate of coolant temperature alteration and thermal strain of fuel rods during the transient from forced circulation to natural circulation were calculated and analyzed.The results show that,RELAP5 code is a proper tool to analyze the thermal strain of fuel rods during the transient from force circulation to natural circulation;the dramatic changes of thermal strain have effects on the mechanical properties of fuel rods;and the thermal stress of fuel rods dur-ing other transient can also be analyzed using RELAP5 code.
出处
《核动力工程》
EI
CAS
CSCD
北大核心
2012年第1期78-82,共5页
Nuclear Power Engineering
基金
国家自然科学基金(10872111)
国家自然科学基金(11072131)
