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| 多群蒙特卡罗程序MCMG的开发与基准校验 | |
| 引用本文： | 蒋校丰,栾兴峰,邓力. 多群蒙特卡罗程序MCMG的开发与基准校验[J]. 核动力工程, 2007, 28(1): 9-12,17 |
| 作者姓名： | 蒋校丰 栾兴峰 邓力 |
| 作者单位： | 上海交通大学核科学与系统工程系,200030;秦山核电公司,浙江海盐,314300;北京应用物理与计算数学研究所,100088 |
| 摘 要： | 基于连续能量蒙特卡罗程序MCNP开发了多群蒙特卡罗程序MCMG.利用由栅元程序WIMS产生的随燃耗变化的多群宏观均匀化截面取代连续能量点截面,大大提高了程序的计算速度,同时也解决了蒙特卡罗程序不能进行燃耗计算等问题.针对输运修正引起的自散射截面导致的负概率抽样现象,提出了一种非负修正方法,并用基准计算验证了该方法的正确性. |
| 关 键 词： | 多群 蒙特卡罗 均匀化截面 MCMG |
| 文章编号： | 0258-0926（2007）01-0009-05 |
| 修稿时间： | 2005-07-182006-09-15 |
Development and Benchmark Calculation of Multigroup Monte Carlo Code MCMG |
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| JIANG Xiao-feng,LUAN Xing-feng,DENG Li. Development and Benchmark Calculation of Multigroup Monte Carlo Code MCMG[J]. Nuclear Power Engineering, 2007, 28(1): 9-12,17 | |
| Authors: | JIANG Xiao-feng LUAN Xing-feng DENG Li |
| Affiliation: | 1. Department of Nuclear Science and System Engineering, Shanghai Jiaotong University, 00030, China; 2. Qinshan Nuclear Power Company, Haiyan, Zhejiang, 314300, China; 3. Institute ofApplied Physics and Computational Mathematics, Beijing, 100088, China |
| Abstract: | A multigroup Monte Carlo Code MCMG is developed based on the continuous-energy Monte Carlo Code MCNP. The continuous-energy point-cross sections are substituted by the homogenized multi- group cross sections as the function of burnup by the lattice code WIMS, which speedup the computation procedures and supply the capability of burnup simulations for the Monte Carlo Code. Because of the phenomenon that the negative self-scattering cross sections cause the negative probability sample, a nonnegative corrected method is put forward and validated by the benchmark problems. |
| Keywords: | Multigroup Monte Carlo Homogenized cross sections MCMG |
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