组件均匀化中的边界条件误差修正方法研究  

Research on assembly homogenization error correction method with boundary condition

作　　者：李文淮[1] 刘志宏[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：《核科学与工程》2011年第3期199-206,共8页Nuclear Science and Engineering

摘　　要：目前常用堆芯物理计算程序在进行组件等效均匀化时大都采用反射边界条件,本文分析了真实边界条件对组件均匀化参数的具体影响,并将这些影响归结为四个可以量化的效应,然后通过线性化假设,得到影响公式。在一个测试模型上的计算发现,通过这四个效应的修正能有效还原回Colorset输运解。该方法可以在不增加更多计算时间的前提下,使采用组件均匀化方法的堆芯计算程序的精度得到明显提高。The methods and procedures currently used in assembly homogenization calculation mostly adopt the reflection boundary condition.This paper analyses the influence of real boundary condition,and summarizes to four quantifiable effects,then gets the expression formula by linearization hypothesis.Calculation in one test model found that the method of considering four boundary quantifiable effects could effectively back to transport calculation result.This method would make the precision of core design code with assembly homogenization methods being improved obviously,without much increase in computing time.

关 键 词：组件均匀化 边界条件 燃耗历史 误差修正 

分 类 号：TL329[核科学技术—核技术及应用]