动态参数形状函数和权重函数对加速器驱动次临界反应堆中子动力学的影响

侯丞; 于涛; 谢金森; 曾文杰; 陈珍平; 谢芹; 刘紫静; 赵鹏程; 何丽华

doi:10.11889/j.0253-3219.2018.hjs.41.090602

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动态参数形状函数和权重函数对加速器驱动次临界反应堆中子动力学的影响

核能科学与工程 | 更新时间：2021-05-19

- 动态参数形状函数和权重函数对加速器驱动次临界反应堆中子动力学的影响
- The effects of the shape function and weighting function on the kinetics of the ADS sub-critical reactor
- 核技术 2018年41卷第9期文章编号：090602
- 作者机构：
  
  1.南华大学核科学技术学院衡阳 421001
  2.南华大学核能与核技术工程虚拟仿真实验教学中心衡阳 421001
- 作者简介：
  
  [ "侯丞, 男, 1992年出生, 2010年毕业于南华大学, 现为硕士研究生, 研究领域为核反应堆物理与数值计算", "HOU Cheng, male, born in 1992, graduated from University of South China in 2010, master student, focusing on nuclear reactor physics and numerical calculations" ]
  于涛, E-mail:yutao29@sina.com YU Tao, E-mail:yutao29@sina.com
- 基金信息：
  
  国家自然科学基金(11575079)
- DOI：10.11889/j.0253-3219.2018.hjs.41.090602
  中图分类号： TL327
- 收稿日期：2018-04-04，
  
  修回日期：2018-05-28，
  
  纸质出版日期：2018-09
- 稿件说明：
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侯丞, 于涛, 谢金森, 等. 动态参数形状函数和权重函数对加速器驱动次临界反应堆中子动力学的影响[J]. 核技术, 2018,41(9):090602

Cheng HOU, Tao YU, Jinsen XIE, et al. The effects of the shape function and weighting function on the kinetics of the ADS sub-critical reactor[J]. Nuclear techniques, 2018, 41(9): 090602
侯丞, 于涛, 谢金森, 等. 动态参数形状函数和权重函数对加速器驱动次临界反应堆中子动力学的影响[J]. 核技术, 2018,41(9):090602 DOI： 10.11889/j.0253-3219.2018.hjs.41.090602.

Cheng HOU, Tao YU, Jinsen XIE, et al. The effects of the shape function and weighting function on the kinetics of the ADS sub-critical reactor[J]. Nuclear techniques, 2018, 41(9): 090602 DOI： 10.11889/j.0253-3219.2018.hjs.41.090602.

摘要

在准静态框架下，动态参数由权重函数、动力学量算符、形状函数的卷积得到。传统方法的形状函数和权重函数并不能满足外源驱动次临界系统的中子动力学分析。本文分别采用

基波中子通量密度、

基波中子通量密度、加速器驱动次临界系统（Accelerator Driven Sub-critical System，ADS）反应堆稳态中子通量密度作为初始形状函数，采用共轭

基波中子通量密度、共轭瞬发

基波中子通量密度、ADS反应堆稳态共轭中子通量密度作为权重函数，通过改进的准静态方法对外源驱动次临界系统的启堆过程和断束工况中子动力学进行模拟。通过与时空动力学方程直接求解结果对比发现：权重函数是影响中子动力学结果的主要因素；对于启堆过程，适合采用ADS反应堆稳态中子通量密度作为初始形状函数、共轭

基波中子通量密度作为权重函数；对于断束工况，适合采用ADS反应堆稳态共轭中子通量密度作为权重函数。权重函数相对于外源瞬变的滞后现象表明，在外源瞬变后的短时间内，外源中子对中子价值和权重函数的影响具有非均匀性，在建立优化的权重函数模型时，需要将共轭外源项的非均匀分布纳入考虑。

Abstract

Background

According to the quasi-static method

the kinetic parameters can be calculated by the convolution of the weighting function

kinetic operators and the shape function. The traditional shape function and weighting function are not suitable for kinetic analysis of source driven sub-critical system.

Purpose

In order to improve the calculation accuracy and understand physical characteristics of the source driven sub-critical system better

different shape functions and weighting functions were applied to improved quasi-static method

and they were evaluated respectively.

Methods

Individually

the

regular flux

regular flux and the steady flux of source driven sub-critical system are adopted as the initial shape functions. The

-eigenequation and

-eigenequation of the critical weighting function of kinetic parameter model

and the global weighting function of kinetic parameter model are used for the weighting function. Then the kinetic parameters and the neutron kinetic results of the starting progress and beam loss conditions can be calculated in the sub-critical system.

Results

The results of the IQS method are compared with the results obtained directly from the spatio-temporal dynamics equation. We can find that the weighting function is the dominant factor that affect the kinetic parameters and the kinetic results. And during the starting progress

the steady flux of source driven sub-critical system and the

-eigenequation of the critical weighting function model have obvious superiority in describing the kinetic characters of the source driven sub-critical system; for the beam loss conditions

adopting the global weighting function model to calculate the weighting function is suitable for the sub-critical system.

Conclusion

The phenomenon that the change of weighting function falls behind the transition of the external neutron source indicates that the extraneous neutron source's effect on neutron importance is inhomogeneous and the inhomogeneous character should be taken into consideration when optimizing the weighting function models.

关键词

Keywords

references

李泽霞 , 刘小平 , 朱相丽 , . 加速器驱动次临界系统发展态势分析 . 科学观察 , 2011 . 6 ( 3 ): 32 - 43 . http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=CAS201303040000644416 .

Zexia LI , Xiaoping LIU , Xiangli ZHU , . International development trend analysis of accelerator-driven sub-critical system . Science Focus , 2011 . 6 ( 3 ): 32 - 43 . http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=CAS201303040000644416 .

于涛 , 谢金森 , 刘紫静 . 加速器束流瞬变ADS次临界反应堆动态特性分析方法研究 . 核动力工程 , 2014 . 35 ( s2 ): 48 - 51 . http://www.cnki.com.cn/Article/CJFDTOTAL-HDLG2014S2014.htm .

Tao YU , Jinsen XIE , Zijing LIU . Analysis method of dynamic characteristics of subcritical reactor of ADS induced by accelerator beam transients . Nuclear Power Engineering , 2014 . 35 ( s2 ): 48 - 51 . http://www.cnki.com.cn/Article/CJFDTOTAL-HDLG2014S2014.htm .

于涛.加速器驱动次临界系统(ADS)束流瞬变动态响应的微机仿真研究[D].北京: 中国原子能科学研究院, 2005.

YU Tao. Computer simulation on transient response of beam transients in accelerator driven sub critical system (ADS)[D]. Beijing: China Institute of Atomic Energy, 2005.

A Rineiski , W Maschek , G Rimpault . Performance of neutron kinetics models for ADS transient analyses . Accapp/adtta , 2001 . 1 11 - 15 . http://cn.bing.com/academic/profile?id=c8b155c427c0d5bcb37f863ed4a6f1ea&encoded=0&v=paper_preview&mkt=zh-cn .

于涛 , 李吉根 , 凌球 , . ADS加速器束流瞬变分析程序开发 . 核动力工程 , 2007 . 28 ( 2 ): 124 - 127 . DOI: 10.3969/j.issn.0258-0926.2007.02.028 http://doi.org/10.3969/j.issn.0258-0926.2007.02.028 .

Tao YU , Jigen LI , Qiu LING , . Development of a beam transient code for ADS . Nuclear Power Engineering , 2007 . 28 ( 2 ): 124 - 127 . DOI: 10.3969/j.issn.0258-0926.2007.02.028 http://doi.org/10.3969/j.issn.0258-0926.2007.02.028 .

K O Ott , R J Neuhold . Introductory nuclear reactor dynamics , Amer Nuclear Society , 1985 .

D'angelo A, Gabrielli F. Benchmark on beam interruptions in an accelerator-driven system[R]. NEA/NSC/DOC, 2003: 17.

宋英明 , 高庆瑜 , 徐宇超 , . 基于IQS/MC方法的ADS次临界反应堆中子时空动力学模拟分析 . 原子能科学技术 , 2017 . 51 ( 3 ): 450 - 456 . http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=yznkxjs201703011 .

Yingming SONG , Qingyu GAO , Yuchao XU , . Simulation analysis of neutron time-space kinetics for ADS sub-critical reactor based on IQS/MC method . Atomic Energy Science & Technology , 2017 . 51 ( 3 ): 450 - 456 . http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=yznkxjs201703011 .

黄祖洽 . 核反应堆动力学基础 , 2版 : 北京北京大学出版社 , 2007 .

Zuqia HUANG . Fundamentals of nuclear reactor dynamics , 2nd ed : Beijing Peking University Press , 2007 .

王苏 , 沈峰 . ADS次临界反应堆的中子共轭方程 . 原子能科学技术 , 2011 . 45 ( 7 ): 775 - 779 . http://d.old.wanfangdata.com.cn/Periodical/yznkxjs201107002 .

Su WANG , Feng SHEN . Adjoint equation of ADS sub-critical reactor . Atomic Energy Science & Technology , 2011 . 45 ( 7 ): 775 - 779 . http://d.old.wanfangdata.com.cn/Periodical/yznkxjs201107002 .

S Dulla , P Ravetto . Interpretation of local flux measurements in subcritical systems and reactivity determination . Science and Technology and Nuclear Installations , 2012 . ( 2012 ): 347 - 359 . DOI: 10.1155/2012/629039 http://doi.org/10.1155/2012/629039 .

K P Singh , S B Degweker , R S Modak , . Iterative method for obtaining the prompt and delayed alpha-modes of the diffusion equation . Annals of Nuclear Energy , 2011 . 38 ( 9 ): 1996 - 2004 . DOI: 10.1016/j.anucene.2011.04.018 http://doi.org/10.1016/j.anucene.2011.04.018 .

Cao Y. Space-time kinetics and time-eigenfunctions[D]. University of Michigan, 2008.

谢金森. ADS次临界反应堆物理特性的谐波展开法研究[D].中国原子能科学研究院, 2016.

XIE Jinsen. A study on neutronics of ADS sub-critical reactor based on harmonics expansion method[D]. China Institute of Atomic Energy, 2016.

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