【作者】 刘长春； 何文翰； 谭智雄； 尹盛晖； 张小英；

【Author】 LIU Chang-chun;HE Wen-han;TAN Zhi-xiong;YIN Sheng-hui;ZHANG Xiao-ying;South China University of Technology;

【机构】 华南理工大学；

【摘要】 针对CPR1000安全壳地坑滤网堵塞时,燃料包壳表面存在污垢沉积的现象,采用显式的有限容积法离散非稳态导热方程,编写了仿真程序,对燃料棒包壳的温度场和燃料通道内冷却剂流场进行了数值模拟,与CFX程序的稳态计算结果进行了验证,分析不同流速、不同污垢厚度、不同压力影响下各位置的瞬态温度场和流场分布。分析结果表示:在安全壳地坑滤网堵塞时,燃料包壳表面的污垢沉积使得包壳温度上升较大,对燃料包壳的完整性的提出严峻考验。更多还原

【Abstract】 In view of the phenomenon that CPR1000 strainer clogging of containment sump and fuel cladding surface have dirt deposition, using explicit finite volume method varied heat quantity conductive equation. wrote the simulation program to simulate the temperature field of fuel can surface and flow field of coolant. Verified it with the steady results of CFX. Besides, analyze the release of temperature field and flow field in different location with different velocities of flow, thickness of dirt and pressure. The result shows that when the strainer of containment sump clogged, fuel cladding surface temperature rise a lot. It has put forward a test to the integrity of fuel cladding.更多还原