Fuel Performance Analysis of Light Water Reactor Based on the Combination of U3Si2 Fuel and Two-Layer SiC Cladding Based on Multi-Physical Field Coupling

被引：0
|
作者：
Yin C. [1 ]
Liu R. [2 ]
Jiao Y. [1 ]
Qiu C. [2 ]
Liu Z. [1 ]
Qiu B. [1 ]
Gao S. [1 ]
Xing S. [1 ]
机构：
[1] Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu
[2] School of Electric Power Engineering, Guangzhou
来源：
Hedongli Gongcheng/Nuclear Power Engineering | 2022年 / 43卷 / 01期
关键词：
Fuel performance; Multi-physical field; Two-layer SiC cladding; U[!sub]3[!/sub]Si[!sub]2[!/sub] fuel;
D O I：
10.13832/j.jnpe.2022.01.0102
中图分类号：
学科分类号：
摘要：
Based on COMSOL platform, a fuel performance analysis program based on multi-physical field full coupling is developed, and the correctness and accuracy of the program are verified by comparing with the radial power distribution model; Then the performances of the combinations of U3Si2 fuel and two-layer SiC cladding, U3Si2 fuel and zirconium alloy cladding under normal reactor operating conditions are further analyzed and compared with the combination of UO2 fuel and zirconium alloy. The calculation results show that the combination of U3Si2 fuel and zirconium alloy cladding has lower fuel center temperature, fission gas release and internal pressure than that of UO2 fuel and zirconium alloy, but the air gap closing time will be earlier; The combination of U3Si2 fuel and two-layer SiC cladding has higher fuel center temperature, greater fission gas release and internal pressure than the combination of U3Si2 fuel and zirconium alloy, and its fuel center temperature increases significantly with the increase of burnup. Compared with zirconium alloy cladding, two-layer SiC cladding can effectively delay the closing of air gap and alleviate the mechanical interaction between fuel and cladding. Copyright ©2022 Nuclear Power Engineering. All rights reserved.
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页码：102 / 109
页数：7
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