特征边界流响应矩阵方法的初步研究  

Preliminary Research on Characteristic Boundary Flow Response Matrix Method

作　　者：刘召远[1] 刘志宏[1] 赵晶[1] 

机构地区：[1]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》2013年第B12期696-699,共4页Atomic Energy Science and Technology

基　　金：国家自然科学基金资助项目(11175097)

摘　　要：将边界流响应矩阵方法应用于二维堆芯计算中取得了较好的计算精度,同时可大幅加快计算速度。本文将该方法与输运计算的计算速度进行对比,并观察不同网格数下边界流响应矩阵方法的计算时间,验证了该方法在计算速度上的优势。为进一步提高栅元功率分布的计算精度,提出了响应矩阵方法的形状因子修正方法及特征响应矩阵方法的实现思路。形状因子修正方法可部分改善栅元功率分布精度,而基于反射边界条件的特征边界流响应矩阵方法则具有进一步的研究潜力。The boundary flow response matrix （BFRM） method can get good precision in 2D reactor core calculation with much less CPU time. The calculation speeds of BFRM method and transport calculation were compared and the calculation time for different numbers of grids using the BFRM method was investigated, which shows the advantage of BFRM method in term of calculation speed. In order to improve the precision of pin power distribution, the shape factor correction method and the characteristic boundary flow response matrix （CBFRM） method were introduced. The shape factor correction method can improve the cell power precision partly, while the CBFRM method based on reflective boundary conditions is more potential in further research.

关 键 词：响应矩阵 形状因子 C5G7MOX基准例题 

分 类 号：TL325[核科学技术—核技术及应用]