INVESTIGATION OF NEUTRON NOISE CALCULATION UNDER FUEL FAILURE CONDITION BASED ON FREQUENCY DOMAIN FINITE ELEMENT METHOD

Baoxin Yuan; Jian Wang; Herong Zeng; Huiyi Lv; Huan Huang; Jie Zheng; Wankui Yang; Zihan Chen; Yunduo Ma; Songbao Zhang

doi:10.1299/jsmeicone.2023.30.1577

2023.30

Session ID : 1577

DOI https://doi.org/10.1299/jsmeicone.2023.30.1577

Conference information

Host: The Japan Society of Mechanical Engineers

Name : The 30th International Conference on Nuclear Engineering (ICONE30)

Date : May 21, 2023 - May 26, 2023

INVESTIGATION OF NEUTRON NOISE CALCULATION UNDER FUEL FAILURE CONDITION BASED ON FREQUENCY DOMAIN FINITE ELEMENT METHOD

Baoxin Yuan, Jian Wang, Herong Zeng, Huiyi Lv, Huan Huang, Jie Zheng, Wankui Yang, Zihan Chen, Yunduo Ma, Songbao Zhang

Author information

Baoxin Yuan
Fundamental Science on Nuclear Wastes and Environmental Safety Laboratory
China Academy of Engineering Physics, Insititute of Nuclear Physics and Chemistry
Jian Wang
China Academy of Engineering Physics, Insititute of Nuclear Physics and Chemistry
Herong Zeng
China Academy of Engineering Physics, Insititute of Nuclear Physics and Chemistry
Huiyi Lv
Fundamental Science on Nuclear Wastes and Environmental Safety Laboratory
Southwest University of Science and Technology, School of National Defense Science and Technology
Huan Huang
China Academy of Engineering Physics, Insititute of Nuclear Physics and Chemistry
Jie Zheng
China Academy of Engineering Physics, Insititute of Nuclear Physics and Chemistry
Wankui Yang
China Academy of Engineering Physics, Insititute of Nuclear Physics and Chemistry
Zihan Chen
China Academy of Engineering Physics, Insititute of Nuclear Physics and Chemistry
Yunduo Ma
China Academy of Engineering Physics, Insititute of Nuclear Physics and Chemistry
Songbao Zhang
China Academy of Engineering Physics, Insititute of Nuclear Physics and Chemistry

Keywords: Reactor, Neutron noise, Fuel element failure, Frequency domain, Finite element, Numerical simulation

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Abstract

After the fuel element is damaged, the delayed neutron precursor flows into the coolant, which will break the inherent balance of the normal core, thus causing the transient change of neutron noise. Based on the neutron noise technology, it is expected to break through the key technology of online monitoring of fuel element damage in the reactor. Based on this idea, this work plans to investigate the fuel failure conditions based on the frequency domain finite element method, focusing on the neutron noise dynamics calculation under the flow scenario of delayed neutron precursor, it can provide some reference and technical support for related work.

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