Calculation of radial power distribution of the UO2 pellet with JMCT-JBURN
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摘要: 研究给出基于蒙特卡罗粒子输运软件JMCT耦合燃耗分析软件JBURN计算燃料棒径向功率分布的方法。介绍了计算模型的建立、输运及燃耗计算的相关设置以及裂变功率、俘获功率的统计方法。UO2燃料棒径向功率分布的计算结果表明，采用JMCT-JBURN软件的结果与工程常用软件符合较好，最大偏差不超过3%，证明了计算方法和计算软件的适用性。该方法可用于工程设计。Abstract: The radial power distribution of UO2 pellet is one of the significant parameters in the fuel rod design of nuclear power plant. The research on the calculation of radial power distribution of the UO2 pellet with the Monte-Carlo particle transport software JMCT coupling the burnup analysis software JBURN is presented. The calculation model, the set-up of the transport and burnup as well as the calculation method of the fission power, and capture power are introduced in this paper. The calculation results show that the result of JMCT-JBURN accord well with that of the reference calculation, and the maximum difference is less than 3%, which proves the applicability of the calculation method and software. This method can be used for engineering design.
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Key words:
- pellet /
- radial power distribution /
- JMCT /
- JBURN
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表 1 代表性核素的俘获反应Q值
Table 1. Q value of fission and capture reaction of typical nuclides
nuclide Q value /MeV 235U 6.54 238U 5.68 239Pu 6.53 240Pu 5.24 241Pu 6.30 131Xe 8.94 135Xe 7.99 150Sm 5.60 151Sm 8.26 
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