期刊论文

Study on calculation method of one-dimensional steady temperature field of annular fuel pellets

Yu, T.

中文

核技术

0253-3219

2020

43

6

109-115

10.11889/j.0253-3219.2020.hjs.43.060603

Supported by University of South China Innovation Foundation For Postgraduate (No.193YXC021) and Natural Science Foundation of Hunan Province (No.2018JJ4033)

本校为第一机构

环形燃料芯块(Annular Fuel Pellets)具有较低的运行温度,能够实现更高的功率密度,已成为先进核反应堆燃料元件的发展方向之一。由于双面冷却环形元件存在流量分配和热量分配问题,实心圆柱燃料芯块的温度场求解方法无法求解环形燃料芯块温度场。建立了环形燃料芯块一维稳态温度场计算模型,开发了环形燃料芯块温度场计算程序PTFA(Program of Temperature Field of Annular Fuel Pellets),并计算了不同功率密度、不同芯块厚度下的绝热面位置、最高温度以及芯块的温度场分布。最后用有限元程序COMSOL5.4验证了不同芯块厚度下不同功率密度的环形燃料芯块的绝热面位置、最高温度以及芯块温度场分布。...

[Background] The annular fuel pellet has a lower operating temperature, which can achieve higher power density, and has become one of the development directions of the advanced nuclear reactor fuel elements. The method of temperature field solution of rod fuel pellets can not solve the temperature field of annular fuel pellets due to the flow distribution and heat distribution problems in the double-sided cooling annular fuel elements. [Purpose] This study aims to calculate one-dimensional steady temperature field of the annular fuel core block...