基于反应性温度系数的金属型脉冲堆波形计算
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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 equations 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 reactor 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.
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 equations 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 reactor 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.
引文
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[2]WIMETT T F.Dynamics and power prediction in fission bursts[J].Nuclear Science and Engineering,1992,110:209-236.
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[9]高辉,刘晓波,蒋勇,等.CFBR-Ⅱ堆脉冲状态反应性温度系数测量[J].原子核物理评论,2012,29(1):114-116.GAO Hui,LIU Xiaobo,JIANG Yong,et al.Measurement of reactivity temperature coefficient of CFBR-Ⅱin burst state[J].Nuclear Physics Review,2012,29(1):114-116(in Chinese).
[10]赵小林,范晓强.CFBR-Ⅱ堆反应性温度效应分析[J].核动力工程,2008,29(5):29-32.ZHAO Xiaolin,FAN Xiaoqiang.Analysis of reactivity temperature effect of CFBR-Ⅱ[J].Nuclear Power Engineering,2008,29(5):29-32(in Chinese).
[11]贺仁辅,邓门才.快中子临界装置和脉冲堆实验物理[M].北京:国防工业出版社,2012.
[12]LIANG Wenfeng,XIE Qilin,QIU Dong.A novel coupled computation method for fast burst reactors[C]∥Transactions of the American Nuclear Society US:American Nuclear Society.2015:437-440.
[13]高辉,刘晓波,范晓强.反应性动态加入对脉冲堆中子脉冲波形的影响[J].核动力工程,2013,34(2):68-71.GAO Hui,LIU Xiaobo,FAN Xiaoqiang.The effects of loading reactivity at dynamic state on wave of neutrons in burst reactor[J].Nuclear Power Engineering,2013,34(2):68-71(in Chinese).
[14]WIMETT T F,ENGLE L B,GRAVES G A,et al.Time behavior of Godiva through prompt critical,LA2029[R].USA:LANL,1960.
[2]WIMETT T F.Dynamics and power prediction in fission bursts[J].Nuclear Science and Engineering,1992,110:209-236.
[3]KIMPLAND R H.Preliminary results of GODIVA-Ⅳprompt burst modeling,LA-UR-96-1498[R].USA:LANL,1996.
[4]KIMPLAND R H.Point kinetics modeling,LA-UR-96-3887[R].USA:LANL,1996.
[5]MYERS W L.The simulation of a critical accident excursion occurring in a simple fast metal system using the coupled neutronic-hydrodynamic method,LA-UR-96-3886[R].USA:LANL,1996.
[6]GROVE T J,KIMPLAND R H,MYERS W L.A dynamic simulation tool for critical assemblies using the coupled neutronic-thermoelastic method[J].Transactions of the American Nuclear Society,2008,99(5):373-374.
[7]WILSON S C,BIEGALSKI S R,COATS R L.Computational modeling of coupled thermomechanical and neutron transport behavior in a Godiva-like nuclear assembly[J].Nuclear Science and Engineering,2007,157:344-353.
[8]KADIOGLU S Y,KNOLL D A.Multiphysics analysis of spherical fast burst reactors[J].Nuclear Science and Engineering,2009,163:132-143.
[9]高辉,刘晓波,蒋勇,等.CFBR-Ⅱ堆脉冲状态反应性温度系数测量[J].原子核物理评论,2012,29(1):114-116.GAO Hui,LIU Xiaobo,JIANG Yong,et al.Measurement of reactivity temperature coefficient of CFBR-Ⅱin burst state[J].Nuclear Physics Review,2012,29(1):114-116(in Chinese).
[10]赵小林,范晓强.CFBR-Ⅱ堆反应性温度效应分析[J].核动力工程,2008,29(5):29-32.ZHAO Xiaolin,FAN Xiaoqiang.Analysis of reactivity temperature effect of CFBR-Ⅱ[J].Nuclear Power Engineering,2008,29(5):29-32(in Chinese).
[11]贺仁辅,邓门才.快中子临界装置和脉冲堆实验物理[M].北京:国防工业出版社,2012.
[12]LIANG Wenfeng,XIE Qilin,QIU Dong.A novel coupled computation method for fast burst reactors[C]∥Transactions of the American Nuclear Society US:American Nuclear Society.2015:437-440.
[13]高辉,刘晓波,范晓强.反应性动态加入对脉冲堆中子脉冲波形的影响[J].核动力工程,2013,34(2):68-71.GAO Hui,LIU Xiaobo,FAN Xiaoqiang.The effects of loading reactivity at dynamic state on wave of neutrons in burst reactor[J].Nuclear Power Engineering,2013,34(2):68-71(in Chinese).
[14]WIMETT T F,ENGLE L B,GRAVES G A,et al.Time behavior of Godiva through prompt critical,LA2029[R].USA:LANL,1960.