The core flux (power) distribution is very important to safe and economical operation of nuclear reactor. It can be obtained by many methods depending on the desired accuracy and execution time. For on-line core surveillance and regulation, we need to get the real-time flux distribution. If the true local parameters such as fuel temperature, coolant temperature and material density were known, the solution of the diffusion equation with instantaneous parameters could, in principle, provide the necessary spatial details. However, in reality, it is impossible to obtain the operational “readings” of these parameters for each fuel cell. The detector results at certain locations can be applied to improve the results of the only diffusion calculations by Flux Mapping methods. Function expansion method is employed to express the approximate real distribution by the combination of several Flux Mapping method results as the expansion basis functions. The Harmonics Synthesis Method (HSM) and Least-Square method are combined to get a new Flux Mapping method in this paper. The simulation results show that the new method can be used for Flux Mapping and get better results.
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18th International Conference on Nuclear Engineering
May 17–21, 2010
Xi’an, China
Conference Sponsors:
- Nuclear Engineering Division
ISBN:
978-0-7918-4930-9
PROCEEDINGS PAPER
A New Method on Flux Mapping by Function Expansion Available to Purchase
Ganglin Yu
Ganglin Yu
Tsinghua University, Beijing, China
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Bin Zhong
Tsinghua University, Beijing, China
Kan Wang
Tsinghua University, Beijing, China
Ganglin Yu
Tsinghua University, Beijing, China
Paper No:
ICONE18-29315, pp. 63-68; 6 pages
Published Online:
April 8, 2011
Citation
Zhong, B, Wang, K, & Yu, G. "A New Method on Flux Mapping by Function Expansion." Proceedings of the 18th International Conference on Nuclear Engineering. 18th International Conference on Nuclear Engineering: Volume 2. Xi’an, China. May 17–21, 2010. pp. 63-68. ASME. https://doi.org/10.1115/ICONE18-29315
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