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Sugie, Tatsuo; Hatae, Takaki; Koide, Yoshihiko; Fujita, Takaaki; Kusama, Yoshinori; Nishitani, Takeo; Isayama, Akihiko; Sato, Masayasu; Shinohara, Koji; Asakura, Nobuyuki; et al.
Fusion Science and Technology (JT-60 Special Issue), 42(2-3), p.482 - 511, 2002/09
Times Cited Count：6 Percentile：3.03(Nuclear Science & Technology)The diagnostic system of JT-60U (JT-60upgrade) is composed of about 50 individual diagnostic devices. Recently, the detailed radial profile measurements of plasma parameters have been improved, so that the internal structure of plasmas has been explored. The understanding of plasma confinement has been enhanced by density and temperature fluctuation measurements using a mm-wave reflectometer and electron cyclotron emission measurements respectively. In addition, the real-time control experiments of electron density, neutron yield, radiated power and electron temperature gradient have been carried out successfully by corresponding diagnostic devices. These measurements and the real time control contribute to improving plasma performance. Diagnostic devices for next generation fusion devices such as a CO2 laser interferometer/polarimeter and a CO2 laser collective Thomson scattering system have been developed.
Kamiya, Tomohiro; Ono, Ayako; Tada, Kenichi; Yamashita, Susumu; Nagaya, Yasunobu; Yoshida, Hiroyuki
no journal, ,
JAEA is developing a platform JAMPAN for multi-physics simulations to improve the design and safety of light water reactors. The Monte Carlo code MVP and the direct numerical simulation code for multi-phase flow JUPITER were coupled on this platform for detailed and high-fidelity neutronics/thermal-hydraulics coupling simulations. Because bubbles generated by boiling in a BWR have a large influence on neutron transport, phase change must be considered for the simulations. We will show simulation results of two-phase flow including phase change in this presentation. In these simulations, a temperature recovering method was used to estimate the amount of evaporation and condensation. We used an interface capture method as two-phase flow analysis method.
