摘要
基于一阶微扰理论,采用合理假设与近似,研究了等效天然铀(NUE)燃料的回收铀(RU)和贫铀(DU)混合比计算方法,确保了NUE燃料与天然铀(NU)燃料之间的等效。所采用的混合比计算方法精确考虑了微观截面随燃耗的变化。在此基础上,开发了ALPHA计算程序,并将其与WIMS-AECL程序一起组成了适用于重水堆NUE燃料混合比计算的程序系统。数值验证表明,该程序系统能准确求解NUE燃料混合比。
Based on the first-order perturbation theory and reasonable approximations,the calculation method of recycled uranium（RU） and depleted uranium（DU） mixing fraction for natural uranium equivalent（NUE） fuel was studied,so the equivalence between NUE fuel and natural uranium（NU） fuel was assured.The adopted calculation method accurately takes the variation of micro cross sections alone with fuel depletion into account.A computer code named ALPHA was programmed to execute the calculation procedure.Then the ALPHA code and the WIMS-AECL code compose a processing system,which is applicable to the mixing fraction calculation for heavy water reactor NUE fuel.The validation shows that the processing system can accurately calculate the mixing fraction for NUE fuel.
出处
《原子能科学技术》
EI
CAS
CSCD
北大核心
2013年第B06期132-136,共5页
Atomic Energy Science and Technology
关键词
等效天然铀燃料
混合比
中子学等效
ALPHA程序
natural uranium equivalent fuel
mixing fraction
neutronics equivalence
ALPHA code
