基于六角形节块法的快堆燃耗计算程序NDHEXB

NDHEXB A PROGRAM FOR FAQST REACTOR BURNUP CALCULATION8S BASED ON A HEXAGONAL NODAL METHOD

描述了快堆燃耗计算程序ＮＤＨＥＸＢ的理论模型，并给出了中国实验快堆（ＣＥＦＲ）的计算结果。结果表明ＮＤＨＥＸＢ具有良好的计算效率与精度。在ＮＤＨＥＸＢ程序中，采用六角形几何下的节块展开法求解中子扩散方程，利用常微分方程的一种数值方法——梯形法求解燃耗方程。

The theoretical models of a program NDHEXB for fast reactor burnup calculations isdescribed.The numerical results of China Experimental Fast Reactor(CEFR)are given and com-pared with the results of the code CITATION,They are about same,In the program NDHEXB,the neutron diffusion equation is solved by a nodal expansion method in hexagonal geometry andthe burnup equation by a kind of numerical methods for differential equations.