基于反应性温度系数的金属型脉冲堆波形计算  

Waveform Calculation of Metal Burst Reactors Based on Reactivity Temperature Coefficient

作　　者：高辉[1,2] 钟力晗 梁文峰[1,2] 宋凌莉[1,2] 

机构地区：[1]中国工程物理研究院中子物理学重点实验室,四川绵阳621900 [2]中国工程物理研究院核物理与化学研究所,四川绵阳621900

出　　处：《原子能科学技术》2017年第5期798-802,共5页Atomic Energy Science and Technology

基　　金：国家自然科学基金青年科学基金资助项目(11305153);国家自然科学基金重大研究计划培育项目资助(91326104);中国工程物理研究院中子物理学重点实验室基金资助项目(2015AA01)

摘　　要：金属型脉冲堆的反应性反馈效应主要由热膨胀引起,本文在反应性温度系数的基础上建立了波形计算方法,该方法由蒙特卡罗中子输运程序、热力学计算程序和点堆方程3部分组成。首先由三维中子输运程序和热力学计算程序计算出热功率和反应性的耦合关系,然后将耦合关系代入点堆方程,即可求解出波形。采用该方法计算了Lady Godiva的波形,计算结果与LANL的实验结果一致。The reactivity feedback effect of metal burst reactors is mainly caused by thermal expansion. The method of waveform calculation was built with MC neutron transport code, the thermomechanics program and point reactor neutron kinetics equa- tions on the basis of reactivity temperature coefficients. The coupling relation between heat power and reactivity is got by means of the three-dimensional MC neutron transport code and thermomechanics program. The waveform is got by way of solving point reac- tor neutron kinetics equations including the coupling relation. Using this convenient method, the typical waveform of Lady Godiva was calculated, and the calculated results are consistent with the experiment results of LANL.

关 键 词：反应性温度系数 脉冲堆 波形计算 中子输运 

分 类 号：TL329[核科学技术—核技术及应用]