Visualization and measurement of multiphase flow by neutron radiography

Kureta, Masatoshi

Kagaku Kogaku, 80(8), p.464 - 467, 2016/08

A neutron radiography is technology which carries out visualization and measurement of the inside of a substance using neutrons. This technology has the complementary feature comparing with X-ray radiography (Roentgen technique). In this review paper, the measurement principle, some application examples such as visualization of oil in the working car engine, and about the leading-edge technology using high-intensity proton beam accelerator facility J-PARC (common neutron imaging facility), etc. It was introduced in the form where the whole neutron radiography technology for every dimension of measurement were covered.

Three-dimensional One-Way bubble tracking method for the prediction of developing bubble-slug flows in a vertical pipe, 1; Models and demonstration

Tamai, Hidesada; Tomiyama, Akio*

Nihon Kikai Gakkai Rombunshu, B, 70(692), p.50 - 57, 2004/04

no abstracts in English

Multiphase flow problems on thermofluid safety for fusion reactors

Takase, Kazuyuki

Konsoryu, 17(3), p.267 - 276, 2003/09

no abstracts in English

Development of fluid-structure interaction code for mercury target, 1

Imai, Ryuta*; Arakawa, Chuichi*; Kobayashi, Kenichi*; Hino, Ryutaro; Ishikura, Shuichi*; Kogawa, Hiroyuki; Terada, Atsuhiko*; Haga, Katsuhiro; Watanabe, Tadashi

Dai-14-Kai Suchi Ryutai Rikigaku Shimpojiumu Koen Yoshishu, p.C10_1_1 - C10_1_14, 2000/00

no abstracts in English

None

PNC TN1000 98-001, 73 Pages, 1998/05

PNC-TN1000-98-001.pdf:5.65MB

no abstracts in English

Collected papers presented at the panel discussion on nuclear heat utilization technology and role of multiphase flow researches at ICMF '95-Kyoto

Sudo, Yukio

JAERI-Conf 95-011, 158 Pages, 1995/06

JAERI-Conf-95-011.pdf:5.08MB

no abstracts in English

Study on improvement of constitutive equations and numerical methods for three-fluid model(3)

The Japan Society of Multiphase Flow*; Special Committee for Examination of Thermohydraulic Analysis Code based on Three-Fluid Model*

PNC TJ9565 94-001, 530 Pages, 1994/03

PNC-TJ9565-94-001.pdf:12.01MB

The purpose of the present study is to improve a numerical prediction method for multiphase flows based on the three-fluid model. Conducted were (1)improvement of a numerical method, (2)survey and examination on constitutive equations for mass transfer terms in annular-mist flow, (3) survey and verification of constitutive equations for momentum transfer terms, (4)collection of experimental database on steam-water and air-water annular-mist flows and numerical analyses of the database to verify the prediction method, (5)extensivc survey on expelimental techniques for annular-mist flow and (6)examination on the governing equations. As a result, the following conclusions were obtained: (a)multi-fluid modeling for all flow regimes were completed, (b)numerical stability of the three-fluid model was darified, (c)stability-enhanced solution method was developed, (d)ill-posedness of the equation system was revealed, (c)a physically-rational and well-posed multi-fluid model was proposed for dispersed flows, (f)systematic survcy and evaluation of constitutive equations for entrainment and deposition were conducted and summarized, (g)a theoretical method for evaluating film thickness, interfacial shear stress and wall shear stress was presented, and (h)it was confirmed that FIDAS-1DS can accurately predict critical heat fluxes under atmosphelic pressure, and that it can givc qualitatively good predictions concerning film thickness, droplet flow rate and so forth of the air-water annular-mist flow.

Limitation of countercurrent gas-liquid flow in horizontal flow path connected to inolined flow path; Prediction of gas velocity on initiation of liquid penetration

;

Nihon Kikai Gakkai Rombunshu, B, 53(490), p.1685 - 1690, 1987/00

no abstracts in English

Multi-phase flow; Gas-liquid system and solid-liquid system

Kagaku Kogaku, 24, P. 645, 1960/00

no abstracts in English