Dynamic Characteristics of Accelerator-Driven Subcritical Reactor With Self-Adapting Multi-Mode Core Few-Group Constants

Dynamic Characteristics of Accelerator-Driven Subcritical Reactor With Self-Adapting Multi-Mode Core Few-Group Constants

In this study, the dynamic characteristics of accelerator-driven subcritical reactor (ADSR) under beam transients with high heterogeneity of neutron flux in time-space are investigated. Multi-mode core few-group constants are generated by three kinds of neutron fluxes: steady state of ADSR, λ-eigenv...

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Main Authors: Nianbiao Deng, Jinsen Xie, Cheng Hou, Wenjie Zeng, Zhenping Chen, Tao Yu, Pengcheng Zhao, Zijing Liu, Chao Xie, Qin Xie
Format: Article
Language:English
Published: Frontiers Media S.A. 2021-01-01
Series:Frontiers in Energy Research
Subjects:
accelerator-driven subcritical system
multi-mode core few-group constants
improved quasi-static method
dynamic characteristics analysis
beam transients
Online Access:https://www.frontiersin.org/articles/10.3389/fenrg.2020.603084/full
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spelling doaj-5efb6c001c5a41499b3fb007462027ba2021-01-13T05:09:47ZengFrontiers Media S.A.Frontiers in Energy Research2296-598X2021-01-01810.3389/fenrg.2020.603084603084Dynamic Characteristics of Accelerator-Driven Subcritical Reactor With Self-Adapting Multi-Mode Core Few-Group ConstantsNianbiao Deng0Nianbiao Deng1Jinsen Xie2Jinsen Xie3Cheng Hou4Wenjie Zeng5Wenjie Zeng6Zhenping Chen7Zhenping Chen8Tao Yu9Tao Yu10Pengcheng Zhao11Pengcheng Zhao12Zijing Liu13Zijing Liu14Chao Xie15Chao Xie16Qin Xie17Qin Xie18School of Nuclear Science and Technology, University of South China, Hunan, ChinaResearch Center for Digital Nuclear Reactor Engineering and Technology of Hunan Province, University of South China, Hunan, ChinaSchool of Nuclear Science and Technology, University of South China, Hunan, ChinaResearch Center for Digital Nuclear Reactor Engineering and Technology of Hunan Province, University of South China, Hunan, ChinaReactor Engineering Technology Research Division, China Institute of Atomic Energy, Beijing, ChinaSchool of Nuclear Science and Technology, University of South China, Hunan, ChinaResearch Center for Digital Nuclear Reactor Engineering and Technology of Hunan Province, University of South China, Hunan, ChinaSchool of Nuclear Science and Technology, University of South China, Hunan, ChinaResearch Center for Digital Nuclear Reactor Engineering and Technology of Hunan Province, University of South China, Hunan, ChinaSchool of Nuclear Science and Technology, University of South China, Hunan, ChinaResearch Center for Digital Nuclear Reactor Engineering and Technology of Hunan Province, University of South China, Hunan, ChinaSchool of Nuclear Science and Technology, University of South China, Hunan, ChinaResearch Center for Digital Nuclear Reactor Engineering and Technology of Hunan Province, University of South China, Hunan, ChinaSchool of Nuclear Science and Technology, University of South China, Hunan, ChinaResearch Center for Digital Nuclear Reactor Engineering and Technology of Hunan Province, University of South China, Hunan, ChinaResearch Center for Digital Nuclear Reactor Engineering and Technology of Hunan Province, University of South China, Hunan, ChinaSchool of Resource Environment and Safety Engineering, University of South China, Hunan, ChinaSchool of Nuclear Science and Technology, University of South China, Hunan, ChinaResearch Center for Digital Nuclear Reactor Engineering and Technology of Hunan Province, University of South China, Hunan, ChinaIn this study, the dynamic characteristics of accelerator-driven subcritical reactor (ADSR) under beam transients with high heterogeneity of neutron flux in time-space are investigated. Multi-mode core few-group constants are generated by three kinds of neutron fluxes: steady state of ADSR, λ-eigenvalue fundamental wave, and α-eigenvalue fundamental wave. The proposed few-group constants overcome the limitation of single few-group constant generated by two-step method that cannot consider the variation in neutron flux density and neutron energy spectrum with time and space. Compared to the existing few-group constants generated by two-step method under different operating conditions, the self-adapting multi-mode core few-group constants exhibit higher accuracy in the case of following two modes: steady-state mode of ADSR in the starting process and λ-eigenvalue mode in the beam trip condition. Overall, this research provides useful insights on neutron kinetics and can boost the development of ADSRs.https://www.frontiersin.org/articles/10.3389/fenrg.2020.603084/fullaccelerator-driven subcritical systemmulti-mode core few-group constantsimproved quasi-static methoddynamic characteristics analysisbeam transients
collection DOAJ
language English
format Article
sources DOAJ
author Nianbiao Deng
Nianbiao Deng
Jinsen Xie
Jinsen Xie
Cheng Hou
Wenjie Zeng
Wenjie Zeng
Zhenping Chen
Zhenping Chen
Tao Yu
Tao Yu
Pengcheng Zhao
Pengcheng Zhao
Zijing Liu
Zijing Liu
Chao Xie
Chao Xie
Qin Xie
Qin Xie
spellingShingle Nianbiao Deng
Nianbiao Deng
Jinsen Xie
Jinsen Xie
Cheng Hou
Wenjie Zeng
Wenjie Zeng
Zhenping Chen
Zhenping Chen
Tao Yu
Tao Yu
Pengcheng Zhao
Pengcheng Zhao
Zijing Liu
Zijing Liu
Chao Xie
Chao Xie
Qin Xie
Qin Xie
Dynamic Characteristics of Accelerator-Driven Subcritical Reactor With Self-Adapting Multi-Mode Core Few-Group Constants
Frontiers in Energy Research
accelerator-driven subcritical system
multi-mode core few-group constants
improved quasi-static method
dynamic characteristics analysis
beam transients
author_facet Nianbiao Deng
Nianbiao Deng
Jinsen Xie
Jinsen Xie
Cheng Hou
Wenjie Zeng
Wenjie Zeng
Zhenping Chen
Zhenping Chen
Tao Yu
Tao Yu
Pengcheng Zhao
Pengcheng Zhao
Zijing Liu
Zijing Liu
Chao Xie
Chao Xie
Qin Xie
Qin Xie
author_sort Nianbiao Deng
title Dynamic Characteristics of Accelerator-Driven Subcritical Reactor With Self-Adapting Multi-Mode Core Few-Group Constants
title_short Dynamic Characteristics of Accelerator-Driven Subcritical Reactor With Self-Adapting Multi-Mode Core Few-Group Constants
title_full Dynamic Characteristics of Accelerator-Driven Subcritical Reactor With Self-Adapting Multi-Mode Core Few-Group Constants
title_fullStr Dynamic Characteristics of Accelerator-Driven Subcritical Reactor With Self-Adapting Multi-Mode Core Few-Group Constants
title_full_unstemmed Dynamic Characteristics of Accelerator-Driven Subcritical Reactor With Self-Adapting Multi-Mode Core Few-Group Constants
title_sort dynamic characteristics of accelerator-driven subcritical reactor with self-adapting multi-mode core few-group constants
publisher Frontiers Media S.A.
series Frontiers in Energy Research
issn 2296-598X
publishDate 2021-01-01
description In this study, the dynamic characteristics of accelerator-driven subcritical reactor (ADSR) under beam transients with high heterogeneity of neutron flux in time-space are investigated. Multi-mode core few-group constants are generated by three kinds of neutron fluxes: steady state of ADSR, λ-eigenvalue fundamental wave, and α-eigenvalue fundamental wave. The proposed few-group constants overcome the limitation of single few-group constant generated by two-step method that cannot consider the variation in neutron flux density and neutron energy spectrum with time and space. Compared to the existing few-group constants generated by two-step method under different operating conditions, the self-adapting multi-mode core few-group constants exhibit higher accuracy in the case of following two modes: steady-state mode of ADSR in the starting process and λ-eigenvalue mode in the beam trip condition. Overall, this research provides useful insights on neutron kinetics and can boost the development of ADSRs.
topic accelerator-driven subcritical system
multi-mode core few-group constants
improved quasi-static method
dynamic characteristics analysis
beam transients
url https://www.frontiersin.org/articles/10.3389/fenrg.2020.603084/full
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