| 子群法与特征线法结合的中子共振计算 |
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| 引用本文： | 黄世恩,王侃,姚栋.子群法与特征线法结合的中子共振计算[J].原子能科学技术,2010,44(10):1201-1206. |
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| 作者姓名： | 黄世恩 王侃 姚栋 |
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| 作者单位： | 1.清华大学 ;工程物理系，北京100084；2.核反应堆系统设计技术国家级重点实验室，四川 ;成都610041 |
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| 摘 要： | 传统的中子共振自屏计算方法采用了有理近似,局限于处理简单的共振模型,在处理复杂燃料栅元/组件时会引入较大误差。为提高复杂情况下共振计算的精度,将子群法共振模型与特征线方法结合,推导了子群法-特征线法方程。基于WIMSD格式的69群数据库,编制了可用于任意二维几何中子共振计算的SGMOC程序。通过数值验证表明,该程序计算结果与MCNP程序计算结果吻合良好,具有较高的计算精度与几何通用性。
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| 关 键 词： | 中子共振计算 子群法 特征线法 SGMOC程序 |
Neutron Resonance Calculation by Combining Subgroup Method With Method of Characteristics |
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| HUANG Shi-en,WANG Kan,YAO Dong.Neutron Resonance Calculation by Combining Subgroup Method With Method of Characteristics[J].Atomic Energy Science and Technology,2010,44(10):1201-1206. |
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| Authors: | HUANG Shi-en WANG Kan YAO Dong |
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| Affiliation: | 1.Department of Engineering Physics, Tsinghua University, Beijing 100084, China;2.National Key Laboratory of Science and Technology on Reactor System Design Technology,Chengdu 610041, China |
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| Abstract: | Rational approximation has been used in the traditional neutron resonance self-shielding calculation, making the calculation localized in dealing with simple resonance models. Such approximation will bring obvious error when dealing with complex fuel cell/assembly. In order to improve the resonance calculation precision in complex cases, the subgroup method was combined with method of characteristics, and the equations of this combined method were derived. Based on the WIMSD format 69-group data library, a neutron resonance calculation code named SGMOC was programmed, which can be used in the arbitrary two-dimensional geometry. The numerical results of SGMOC are in good agreement with those of MCNP, and thus SGMOC has high calculation precision and geometry flexibility. |
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| Keywords: | neutron resonance calculation subgroup method method of characteristics SGMOC code |
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