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Takeda, Takeshi; Onuki, Akira*; Kanamori, Daisuke*; Otsu, Iwao
Science and Technology of Nuclear Installations, 2016, p.7481793_1 - 7481793_15, 2016/00
Times Cited Count：2 Percentile：16.06(Nuclear Science & Technology)Okuno, Hiroshi; Tonoike, Kotaro; Sakai, Tomohiro*
Proceedings of International Conference on the New Frontiers of Nuclear Technology; Reactor Physics, Safety and High-Performance Computing (PHYSOR 2002) (CD-ROM), 8 Pages, 2002/10
As the burnup proceeds, reactivity of fuel assemblies for light water reactors decreases by depletion of fissile nuclides, especially in the axially central region. In order to describe the importance of the end regions to the reactivity change, a burnup importance function was introduced as a weighting function to a local burnup variation contributed to a reactivity decrease. The function was applied to the OECD/NEA/BUC Phase II-A model and a simplified Phase II-C model. The application to Phase II-A model clearly showed that burnup importance of the end regions increases as burnup and/or cooling time increases. Comparison of the burnup importance function for different initial enrichments was examined. The application result to the simplified Phase II-C model showed that the burnup importance function was helpful to find the most reactive fuel burnup distribution under the conditions that the average fuel burnup was kept constant and the variations in the fuel burnup were within the maximum and minimum measured values.
Seul, K. W.*; Yonomoto, Taisuke; Bang, Y. S.*; Anoda, Yoshinari
Proceedings of 6th Biennial Conference on Engineering Systems Design and Analysis (ESDA2002), 9 Pages, 2002/07
no abstracts in English
Yonomoto, Taisuke; Otsu, Iwao; Svetlov, S.*
Proceedings of 3rd Korea-Japan Symposium on Nuclear Thermal Hydraulics and Safety (NTHAS-3), p.521 - 528, 2002/00
A research project is being conducted at the Japan Atomic Energy Research Institute on thermal hydraulics for the future reactor systems. The present paper provides the belief description of the project, followed by two recent topics: the natural circulation in the PWR loop and the condensation heat transfer for a passive cooling system. For the first topic, we discuss the importance of the modeling of the nonuniform flow behavior among SG U-tubes for the assessment of the long-term decay heat removal systems relying on the SG secondary side cooling. Such a system is planned to be used in APWR+, a Japanese next-generation PWR. The condensation heat transfer was investigated using the data obtained at the SPOT test facility in Russia. The results have shown that the measured heat transfer rates on the inner surface of the tube consisting of several bends and short straight sections can be predicted using the existing correlations with the accuracy of several percentage, although the correlations are based typically on the data taken using relatively long straight tube.
Kusunoki, Tsuyoshi; Odano, Naoteru; Yoritsune, Tsutomu; Ishida, Toshihisa; Hoshi, Tsutao*; Sako, Kiyoshi*
Nuclear Engineering and Design, 201(2-3), p.155 - 175, 2000/10
Times Cited Count：56 Percentile：93.58(Nuclear Science & Technology)no abstracts in English
Yonomoto, Taisuke; Otsu, Iwao
Proceedings of 12th Pacific Basin Nuclear Conference (PBNC 2000), Vol.1, p.317 - 329, 2000/00
no abstracts in English
Yoritsune, Tsutomu; Kusunoki, Tsuyoshi; Odano, Naoteru; Ishida, Toshihisa
Proceedings of the 4th JSME-KSME Thermal Engineering Conference, p.1_31 - 1_36, 2000/00
no abstracts in English
Asaka, Hideaki; Anoda, Yoshinari; Kukita, Yutaka*;
Journal of Nuclear Science and Technology, 35(12), p.905 - 915, 1998/12
Times Cited Count：16 Percentile：75.23(Nuclear Science & Technology)no abstracts in English
; Suyama, Kenya;
Journal of Nuclear Science and Technology, 35(3), p.240 - 242, 1998/03
Times Cited Count：1 Percentile：15.05(Nuclear Science & Technology)no abstracts in English
; Kukita, Yutaka*; Asaka, Hideaki; M.Wang*; Otani, Etsuo*
Nuclear Technology, 126(3), p.331 - 339, 1998/00
Times Cited Count：9 Percentile：55.86(Nuclear Science & Technology)no abstracts in English
M.C.Brady*; ; M.D.DeHart*; A.Nouri*; E.Sartori*
Proc. of Int. Conf. on the Phys. of Nucl. Sci. and Technol., 1, p.624 - 630, 1998/00
no abstracts in English
Yonomoto, Taisuke; ; Kukita, Yutaka
Journal of Nuclear Science and Technology, 34(6), p.571 - 581, 1997/06
Times Cited Count：5 Percentile：41.84(Nuclear Science & Technology)no abstracts in English
Iguchi, Tadashi; Onuki, Akira; Iwaki, Chikako*; Kureta, Masatoshi; Akimoto, Hajime
Proc. of 5th Int. Conf. on Nuclear Engineering (ICONE-5), p.1 - 9, 1997/00
no abstracts in English
; Murao, Yoshio
Journal of Nuclear Science and Technology, 33(4), p.290 - 297, 1996/04
Times Cited Count：3 Percentile：31.96(Nuclear Science & Technology)no abstracts in English
Iwamura, Takamichi; Araya, Fumimasa; Murao, Yoshio
Journal of Nuclear Science and Technology, 33(4), p.316 - 326, 1996/04
Times Cited Count：1 Percentile：14.04(Nuclear Science & Technology)no abstracts in English
Kukita, Yutaka; Yonomoto, Taisuke; ; Nakamura, Hideo; Kumamaru, Hiroshige; Anoda, Yoshinari; T.J.Boucher*; M.G.Ortiz*; R.A.Shaw*; R.R.Schultz*
Journal of Nuclear Science and Technology, 33(3), p.259 - 265, 1996/03
Times Cited Count：34 Percentile：90.94(Nuclear Science & Technology)no abstracts in English
Konsoryu, 10(4), p.360 - 363, 1996/00
no abstracts in English
G.S.Rhee*; Kukita, Yutaka; R.R.Schultz*
NUREG/CP-0149 (Vol. 1), 0, p.243 - 264, 1996/00
no abstracts in English
M.C.Brady*; ; M.D.DeHart*; Okuno, Hiroshi; A.Nouri*; E.Sartori*
PHYSOR 96: Int. Conf. on the Physics of Reactors, 4, p.L41 - L52, 1996/00
no abstracts in English
Murao, Yoshio
Proc. of 11th KAIF/KNS Annual Conf., 0, p.587 - 596, 1996/00
no abstracts in English
