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Oh, Tea-suk; Chung, Yunseok; Kim, Yonghee, E-mail: yongheekim@kaist.ac.kr
Proceedings of reactor physics Asia conference 2019 (RPHA19)2020
Proceedings of reactor physics Asia conference 2019 (RPHA19)2020
AbstractAbstract
[en] In order to acquire the space-time solution of neutron balance equation with in a tolerable computational burden, factorization of flux into the product of two functions, which are namely 'amplitude' and 'shape' is widely utilized. The shape function varies in a longer time-scale than the amplitude, which makes the implementation of different time steps viable. In this paper, IQS (Improved Quasi-Static) and PCQS (Predictor Corrector Quasi-Static) methods have been employed, which contains Point Kinetic Equations (PKE), to solve a transient problem in a 1D-1 group slab reactor. The new method to harness physical quantities of Kinetic Equation to attain the variation of amplitude is implemented along with the conventional approach. It has been shown that the proposed method more aptly reflects the physical perturbation. (author)
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Pyeon, Cheol Ho; Yamanaka, Masao (Kyoto University, Institute for Integrated Radiation and Nuclear Science, Kumatori, Osaka (Japan)) (eds.); Ohoka, Yasunori (ed.) (Nuclear Fuel Industries, Ltd., Yokohama, Kanagawa (Japan)); Tsujita, Kosuke (ed.) (Nuclear Engineering, Ltd., Osaka (Japan)); Kyoto University, Institute for Integrated Radiation and Nuclear Science, Kumatori, Osaka (Japan); [321 p.]; Nov 2020; p. 209-212; RPHA19: Reactor physics Asia conference 2019; Osaka (Japan); 2-3 Dec 2019; Also available from https://www.rri.kyoto-u.ac.jp/PUB/report/09_kurns/temp/kurns-ekr-005.pdf; 3 refs., 6 figs., 2 tabs.
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