三维中子-光子离散纵标输运程序CTDOS开发与验证

Development and Validation of 3-D Discrete Ordinates Neutron and Photon Transport Code CTDOS

摘要: 基于离散纵标方法开发了三维输运屏蔽程序CTDOS测试版。该程序可实现三维几何系统内中子-光子输运过程k_eff和固定源计算问题的求解。采用CTDOS程序对Takeda基准题第一模型、Kobayashi基准题第一模型进行了计算，k_eff计算结果与基准题及TORT计算结果的最大误差小于0.04%，群通量密度计算结果与基准题及TORT计算结果的平均误差约为3%。结果初步证明：CTDOS开发过程及功能是正确的，计算精度较高。

Abstract: The 3-D discrete ordinates neutron and photon transport code CTDOS test version was developed. Neutron and photon transport problems of k_eff and fixed source calculation can be solved by the code. ModelⅠ of Takeda benchmarks and Kobayashi benchmarks, and the coupling problem of neutron-photon were tested by CTDOS. Compared with the results given by benchmarks and TORT, the maximum deviation of k_eff is 0.04%, and the average deviation of group flux is about 3%. The results show that the development process and functions are right, and the accuracy is satisfied.