Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Suzuki, Yoshio; Sai, Kazunori*; Ono, Nobuaki*; Koyamada, Koji*
Kashika Joho Gakkai-Shi, 24(Suppl.1), p.443 - 446, 2004/07
no abstracts in English
Otagiri, Sadanori*; Hirota, Katsuhiko*; Suzuki, Yoshio; Watashiba, Yasuhiro*; Koyamada, Koji*
Kashika Joho Gakkai-Shi, 24(Suppl.1), p.455 - 456, 2004/07
no abstracts in English
Ono, Nobuaki*; Suzuki, Yoshio; Kureta, Masatoshi
Kashika Joho Gakkai-Shi, 24(Suppl.1), p.315 - 316, 2004/07
no abstracts in English
Kureta, Masatoshi
Kashika Joho Gakkai-Shi, 24(Suppl.1), p.265 - 268, 2004/07
Visualization of 3D and instantaneous void fraction distribution of boiling flow in a tight-lattice 14-rod bundle is conducted by using neutron tomography and high-frame- rate neutron radiography void fraction measurement techniques. The purpose of the experiment is to understand vapor bubbles/water behavior ranging from the onset of boiling to the high void fraction region based on ("3D" + "2D+Time") void fraction data, and to obtain the fine-mesh database for verification of advanced analysis codes. Following phenomena are made clear from the present experiment: Vapor accumulates in the channel center; High void fraction spots appear between adjacent heater rods, that is, in narrow space at the inlet; Void fraction in the triangular space among three rods becomes high by void drift phenomenon, and "vapor chimney" is formed; Flow is intermittent, and vapor bubble clusters are formed periodically; Onset points of net vapor generation are scattered not only in the center but in the peripheral.
