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Ono, Ayako; Tanaka, Masaaki; Kobayashi, Jun; Kamide, Hideki
Mechanical Engineering Journal (Internet), 4(1), p.16-00217_1 - 16-00217_15, 2017/02
In the design of the Advanced Sodium-cooled Fast Reactor in Japan, the Reynolds number in the primary hot leg (H/L) piping reaches 4.2
10
. Furthermore, a short elbow is used in the H/L piping to achieve a compact plant layout. In the H/L piping, flow-induced vibration is a concern due to the excitation force caused by pressure fluctuation in the short elbow. In this report, the influence of inlet velocity condition on the unsteady velocity characteristics in the short elbow was studied by controlling the flow patterns at the elbow inlet. Measured velocity distributions indicated that the inlet velocity profiles affected a circumferential secondary flow, which then affected an area of flow separation at the elbow. It was also found that the velocity fluctuation at low frequency components observed upstream of the elbow could remain in downstream of the elbow though its intensity was attenuated.
Ono, Ayako; Tanaka, Masaaki; Kobayashi, Jun; Kamide, Hideki
Proceedings of 9th Korea-Japan Symposium on Nuclear Thermal Hydraulics and Safety (NTHAS-9) (CD-ROM), 7 Pages, 2014/11
Kiriyama, Hiromitsu
Recent Research Developments in Optics, Vol.3, p.155 - 171, 2003/12
no abstracts in English
Kiriyama, Hiromitsu; Yamakawa, Koichi
Reza Gakkai Dai-313-Kai Kenkyukai Hokoku; Kokino Kotai Reza To Sono Oyo, p.1 - 6, 2003/09
no abstracts in English
O
frequency doublerKiriyama, Hiromitsu; Inoue, Norihiro*; Yamakawa, Koichi
Reza Kenkyu, 31(4), p.282 - 285, 2003/04
no abstracts in English
O frequency doubler for high-energy Nd:Glass laserKiriyama, Hiromitsu; Inoue, Norihiro*; Yamakawa, Koichi
High-Power Lasers and Applications II (Proceedings of Photonics Asia 2002 Volume 4914), p.6 - 13, 2002/10
no abstracts in English
O crystalsKiriyama, Hiromitsu; Inoue, Norihiro*; Yamakawa, Koichi
JAERI-Research 2002-020, 13 Pages, 2002/09
JAERI-Research-2002-020.pdf:1.14MB
no abstracts in English
O crystalsKiriyama, Hiromitsu; Nakano, Fumihiko*; Yamakawa, Koichi
Journal of the Optical Society of America B, 19(8), p.1857 - 1864, 2002/08
Times Cited Count：7 Percentile：35.49(Optics)no abstracts in English
O crystalsKiriyama, Hiromitsu; Inoue, Norihiro*; Yagi, Kenichi*; Nagai, Toru*; Aoyama, Makoto; Yamakawa, Koichi
Proceedings of Conference on Lasers and Electro-Optics / Quantum Electronics and Laser Science Conference (CLEO/QELS 2002), p.CPDC6_1 - CPDC6_3, 2002/00
no abstracts in English
Kiriyama, Hiromitsu; Nakano, Fumihiko*; Yamakawa, Koichi
JAERI-Research 2001-030, 26 Pages, 2001/05
JAERI-Research-2001-030.pdf:1.14MB
no abstracts in English
O crystalsKiriyama, Hiromitsu; Matsuoka, Shinichi*; Nakano, Fumihiko*; Yamakawa, Koichi
JAERI-Research 2001-019, 7 Pages, 2001/03
JAERI-Research-2001-019.pdf:0.39MB
no abstracts in English
O crystals for highy efficient second-harmonic generation of high-power Nd:YAG laserKiriyama, Hiromitsu; Nakano, Fumihiko*; Yamakawa, Koichi
Technical Digest on 4th Pacific Rim Conference on Lasers and Electro-Optics (CLEO/Pacific Rim 2001), p.II_150 - II_151, 2001/00
no abstracts in English
O crystals for the efficient second-harmonic generation of high power Nd:YAG laserKiriyama, Hiromitsu; Matsuoka, Shinichi; Nakano, Fumihiko*; Yamakawa, Koichi
Optical Review, 7(4), p.281 - 283, 2000/07
Times Cited Count：2 Percentile：16.06(Optics)no abstracts in English
; Ijiri, Yuji*; ;
JNC TN8400 2000-021, 66 Pages, 2000/04
JNC-TN8400-2000-021.pdf:4.38MB
A reliability evaluation for radionuclide transport analysis code, MATRICS, used in radionuclide transport analysis in the natural barrier system PA in H12 report has been carried out. Sensitivity analysis to radionuclide transport parameter in MATRICS and analytical solution has been performed, and the results of each analysis have been compared. Additionally sensitivity analysis using Talbot Method, Crump method and Hosono method has been carried out, and the results of each inverse Laplace transform method has been compared. The conclusions obtained from the results of the evaluation are summarized as follows, (1)In case of the infinite matrix diffusion distance, an error among the results of each calculation is maximum about 0.4% in the range of Pe number from 1.0 to 100. And, an error among the results of each calculation is maximum about 5.5% in the range of transmissivity from 1.010
to 1.010
(m
/s). (2)In case of the finite matrix diffusion distance (0.03
1.0(m)), an error among the results of each calculation is maximum about 0.7% in the range of Pe number from 1.0 to 100. And, an error among the results of each calculation is maximum about 2.4% in the range of transmissivity from 1.010 to 1.010(m/s). 3)By comparing Talbot method with other inverse Laplace transform method, Talbot method is confirmed to give similar results with other inverse Laplace transform method in the range of Pe number from 5.010
to 2.010
, and that of transmissivity below 1.010
(m/s). Therefore, it is concluded that the reliability of MATRICS are confirmed by conducting sensitivity analysis in the range of Pe number and transmissivity coefficient used in H12 report.
B
O
Sugiyama, Akira; Gallagher, H. G.*; Han, T. P. J.*
JAERI-Tech 99-069, p.27 - 0, 1999/09
no abstracts in English
; Kato, Masaaki; Niwa, Yoshito*; Harayama, Sayaka; Maruyama, Yoichiro; Matoba, Toru; Arisawa, Takashi
Solid State Lasers VII, 3265, p.212 - 218, 1998/00
no abstracts in English
Sugiyama, Akira; Anzai, Yutaka*; Katsurayama, Masamichi*; ; ; Sasuga, Tsuneo; Arisawa, Takashi;
JAERI-Tech 97-049, 50 Pages, 1997/10
no abstracts in English
