角度相关不连续因子在JRR3M堆芯输运计算中的应用  

Application of Angular Flux Discontinuity Factors in JRR3M Reactor Core Transport Calculation

作　　者：徐红[1] 胡永明[1,2] 周志伟[1,2] 

机构地区：[1]国家核电技术研发中心,北京100190 [2]清华大学核能与新能源技术研究院,北京100084

出　　处：《原子能科学技术》2011年第8期949-954,共6页Atomic Energy Science and Technology

摘　　要：针对含有强吸收体控制组件的日本研究堆JRR3M,在进行堆芯输运方程计算时,给出了角通量不连续因子(AFDF)的定义,并指出使用角通量不连续因子的必要性,提出使用迭代求解的方法来提高计算精度,并使之满足不连续因子自洽性。针对堆芯设计计算量大的特点,使用了超栅元近似方法。该方法能有效缩短计算时间,且灵活性强。利用组件形状函数,能重构出非均匀模型堆芯通量分布。最后讨论了扩散计算时不连续因子的选取问题,指出根据参考的不同,应选择不同的不连续因子。The Japanese research reactor JRR3Mwhich had strong absorber assemblies was studied.The angular flux discontinuity factor（AFDF）was defined when the transport calculation in JRR3Mwas processed.For improving calculation precision and making the AFDF self-consistent,the iteration method was used.Super cell approximation method was used for big calculation quantity of reactor core design,and it could reduce calculation time efficiently and had strong maneuverability.Using assembly flux shape function,the homogeneous fluxes were reshaped and made them adjacent to the heterogeneous fluxes distribution.Finally,how to choose AFDFs in diffusion calculation and transport calculation was studied.The result shows that different AFDFs are chosen according to different reference models.

关 键 词：不连续因子 输运方程 组件均匀化 

分 类 号：TL328[核科学技术—核技术及应用]