快中子反应堆增殖特性最优化分析

Optimization of Breeding Property in a Fast Reactor

本文根据快中子反应堆生产电能的要求,把堆芯产生最大功率的问题描述为一个最优控制问题,求得最优中子通量分布。在此前提下,又根据采用氧化物燃料(UO_2-PuO_2)的快堆。在燃料循环周期内,增殖比在初始增殖比基础上随燃耗加深而逐渐下降的特点,用最优化方法解决了初始增殖比达到最大值的问题,为快堆设计提供了理论依据。

Based on the demand of producing energy in a fast reactor,the problem of maximum power output in a core is descriped asa optimal control problem,therefore,optimal neatron flux distr-ibution can be obtained.During fuel cycle of the fast reactorfuelled UO_2-PuO_2,breeding ratio decreases in value when burnupincreases,the decreasing in value concerns initial breeding ratio,hence,method of optimization is used for solving optimal initialbreeding ratio.The obtained results provide useful materials fordesigning a fast reactor.