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Shibamoto, Yasuteru; Kukita, Yutaka*; Nakamura, Hideo
Nihon Kikai Gakkai Rombunshu, B, 71(703), p.825 - 832, 2005/03
no abstracts in English
Shibamoto, Yasuteru; Kukita, Yutaka*; Nakamura, Hideo
Proceedings of 5th International Conference on Multiphase Flow (ICMF 2004) (CD-ROM), p.217_1 - 217_9, 2004/05
no abstracts in English
Kritmaitree, P.*; Akiyama, Mitsunobu*; Hino, Ryutaro; Kaminaga, Masanori; Terada, Atsuhiko*
Journal of Nuclear Science and Technology, 37(11), p.996 - 998, 2000/11
no abstracts in English
Koshizuka, Seiichi*; *; Okano, Yasushi; *; Yamaguchi, Akira
JNC TY9400 2000-012, 91 Pages, 2000/03
JNC-TY9400-2000-012.pdf:2.82MB
no abstracts in English
Kamada, Yutaka; Isayama, Akihiko; Oikawa, Toshihiro; Sakamoto, Yoshiteru; Hosogane, Nobuyuki; Takenaga, Hidenobu; Kusama, Yoshinori; Fujita, Takaaki; Takeji, Satoru; Ozeki, Takahisa; et al.
Nuclear Fusion, 39(11Y), p.1845 - 1853, 1999/11
no abstracts in English
Nakamura, Yoshiteru; Ishibori, Ikuo; Arakawa, Kazuo; Nara, Takayuki
Proc. of 11th Symp. on Accelerator Sci. and Technol., p.368 - 370, 1997/00
no abstracts in English
;
PNC TN9410 96-276, 49 Pages, 1996/09
Fluid flow in circular tube is the most frequently encountered in engineering fields related to thermal hydraulics. The fluid flow in straight tube has been investigated with many experiments and analyses in laminar and turbulence conditions with sufficient accuracy. In the design of plant piping, there are many contract and enlargement of flow area as well as elbows and junctions. Such a complexity of industrial piping requires fine mesh and long simulation time for the analyses of the flow. To evaluate the applicability of the AQUA code for flow analyses in an industrial piping, analyses for convection around submerged a cylinder, secondary flow with elbows and flow in a sudden contract were carried out. With the analysis of flow field around a submerged cylinder, drag force acting on the cylinder was evaluated from the numerical simulation with AQUA code. The drag force was agreed with the results using equation of drag coefficient depends on measured data in case of small friction of submerged cylinder and narrow separation region of the cylinder. In the analysis of the secondary flow with three elbows, AQUA code simulates the characteristics of secondary flow. The results showed that the secondary flow almost disappeared at point at 30d (d; diameter of pipe) distance from the elbow. The flow in a sudden contract was simulated. Ratio of the cross sectional area for pipe to the area for vessel is 0.2. In this case, effect of the contract to velocity distribution is small at the position that from inlet of the pipe to two times of the diameter in the downstream.
Kamada, Yutaka; Yoshino, Ryuji; Neyatani, Yuzuru; Sato, Masayasu; Tokuda, Shinji; Azumi, Masafumi; Takeji, Satoru; Ushigusa, Kenkichi; Fukuda, Takeshi; Mori, Masahiro; et al.
Plasma Physics and Controlled Nuclear Fusion, 38(8), p.1387 - 1391, 1996/08
Times Cited Count：45 Percentile：78.98(Physics, Fluids & Plasmas)no abstracts in English
*; *; *
PNC TJ9614 94-001, 59 Pages, 1994/03
Crossflow of a two-phase mixture between vertical subchannels is subdivided into three components in the literature; turbulent mixing, void drift and diversion crossflow. Of these, turbulent mixing alone occurs in an equiliblium flow, in which flow rates of both phases in each subchannel do not change in the axial direction. In a general non-equilibrium flow, however, all three components occur simultaneously. In this report, effect of pressure differential between subchannels on flow redistribution process along the channel axis has been studied experimentally. In the experiment, a multiple channel, consisting of two identical circular subchannels of 16 mm I.D., were used as a test channel. And, air and water were introduced unevenly into the two subchannels at the inlet to get several non-equilibrium flows with and without the pressure differential between subchannels. For each flow, we have obtained the axial distributions data of pressure differential between the subchannels, the air and water flow rates, the void fractions, and the tracer concentrations for both phases when gas and liquid tracers were injected into one of the two subchannels. From these experimental data, we have estimated lateral velocities of the air and water corresponding to each crossflow component, and analyzed the effect of the pressure differential on the lateral velocities.
Otsuka, Hideo; *; Shimada, Taihei
JAERI-M 93-051, 37 Pages, 1993/03
no abstracts in English
Shibanuma, Kiyoshi
Shinku, 34(8), p.645 - 652, 1991/00
no abstracts in English
; ; Ohara, Yoshihiro;
JAERI-M 9852, 41 Pages, 1981/12
no abstracts in English
Yoshida, Hiroyuki; Uesawa, Shinichiro; Horiguchi, Naoki; Abe, Yutaka*
no journal, ,
no abstracts in English
Horiguchi, Naoki; Yoshida, Hiroyuki; Kanagawa, Tetsuya*; Kaneko, Akiko*; Abe, Yutaka*
no journal, ,
no abstracts in English
Horiguchi, Naoki; Yoshida, Hiroyuki; Nakao, Yasuhiro*; Kanagawa, Tetsuya*; Kaneko, Akiko*; Abe, Yutaka*
no journal, ,
no abstracts in English
