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Inagaki, Atsushi*; Kanda, Manabu*; Ahmad, N. H.*; Yagi, Ayako*; Onodera, Naoyuki; Aoki, Takayuki*
Boundary-Layer Meteorology, 164(2), p.161 - 181, 2017/08
Times Cited Count：30 Percentile：73.33(Meteorology & Atmospheric Sciences)The applicability of outer-layer scaling is examined by numerical simulation of a developing neutral boundary layer over a realistic building geometry of Tokyo. Large-eddy simulations are carried out over a large computational domain 19.2 km 
4.8 km 1 km, with a fine grid spacing (2 m) using the lattice-Boltzmann method with massively parallel graphics processing units. Results from simulations show that outer-layer features are maintained for turbulence statistics in the upper part of the boundary layer, as well as the width of predominant streaky structures throughout the entire boundary layer. This is caused by the existence of very large streaky structures extending throughout the entire boundary layer, which follow outer-layer scaling with a self-preserving development. We assume the top-down mechanism in the physical interpretation of results.
Nemoto, Yoshiyuki; Kaji, Yoshiyuki; Ogawa, Chihiro; Nakashima, Kazuo*; Tojo, Masayuki*
Zairyo To Kankyo, 66(5), p.180 - 187, 2017/05
In spent fuel pool (SFP) under loss-of-cooling or loss-of-coolant severe accident condition, the spent fuels will be exposed to air and heated by their own residual decay heat. Integrity of fuel cladding is crucial for SFP safety therefore study on cladding oxidation in air at high temperature is important. Zircaloy-2 (Zry2) and zircaloy-4 (Zry4) were applied for thermogravimetric analyses (TGA) in different temperatures and different air flow rates in this work. Oxidation rate increased with temperature. In range of air flow rate predicted in spent fuel lack during SFP accident, influence of flow rate was not clearly observed below 950
C for Zry2 and below 1050C for Zry4. Over these temperature, oxidation rates appeared obviously higher in higher air flow rate, and this trend became clearer when temperature increased. Oxide layers were carefully examined after the oxidation tests and compared with the mass gain data in TGA to investigate detail of air oxidation process. The results revealed that mass gain data in the pre breakaway transition stage reflects growth of the dense oxide film on specimen surface, and in the post breakaway transition stage, it reflects growth of porous oxide layer beneath the breakaway cracking of the oxide film.
Suzuki, Takahiro; Ide, Shunsuke; Oikawa, Toshihiro; Ikeda, Yoshitaka; Kajiwara, Ken; Isayama, Akihiko; Fujita, Takaaki; Hamamatsu, Kiyotaka; JT-60 Team
Plasma Physics and Controlled Fusion, 44(1), p.1 - 9, 2002/01
Times Cited Count：18 Percentile：50.76(Physics, Fluids & Plasmas)no abstracts in English
Azumi, Masafumi
Purazuma, Kaku Yugo Gakkai-Shi, 77(5), p.457 - 463, 2001/05
no abstracts in English
Hasegawa, Yukihiro*; Hamamatsu, Kiyotaka; Shirai, Hiroshi; Matsuda, Toshiaki; *; Itakura, Hirofumi*; *
JAERI-Tech 99-015, 27 Pages, 1999/02
no abstracts in English
Hirabayashi, Takakuni; Kameo, Yutaka; Nakashio, Nobuyuki
Proceedings of International Symposium on Technologies for the Management of Radioactive Waste from Nuclear Power Plants and Back End Nuclear Fuel Cycle Activities (CD-ROM), 10 Pages, 1999/00
no abstracts in English
Tokuoka, Naochika*; Kobayashi, Mamoru*; Koyama, Takashi*
PNC TJ1636 96-001, 64 Pages, 1996/03
None
Yamanishi, Toshihiko; Enoeda, Mikio; Okuno, Kenji
Journal of Nuclear Science and Technology, 31(9), p.937 - 947, 1994/09
Times Cited Count：4 Percentile：42.34(Nuclear Science & Technology)no abstracts in English
Sakata, Shinya; *; *; *; Aoyagi, Tetsuo; Saito, Naoyuki; Harada, Hiro; Tani, Keiji
JAERI-M 94-050, 32 Pages, 1994/03
no abstracts in English
JAERI-M 91-113, 52 Pages, 1991/07
no abstracts in English
*; Kyoya, Masahiko; *; *
JAERI-M 91-021, 61 Pages, 1991/03
no abstracts in English
; Takizuka, Takakazu
JAERI-M 87-174, 17 Pages, 1987/10
no abstracts in English
; ;
Nihon Genshiryoku Gakkai-Shi, 29(2), p.158 - 163, 1987/02
Times Cited Count：1 Percentile：19.33(Nuclear Science & Technology)no abstracts in English
;
Journal of Nuclear Science and Technology, 21(1), p.61 - 70, 1984/00
Times Cited Count：12 Percentile：75.07(Nuclear Science & Technology)no abstracts in English
;
Journal of Nuclear Science and Technology, 21(11), p.853 - 861, 1984/00
Times Cited Count：21 Percentile：85.09(Nuclear Science & Technology)no abstracts in English
; *
Journal of Nuclear Science and Technology, 17(1), p.57 - 66, 1980/00
Times Cited Count：6 Percentile：58.22(Nuclear Science & Technology)no abstracts in English
; ; ;
JAERI-M 7431, 20 Pages, 1977/12
no abstracts in English
