Michio MURASE, Akio Tomiyama, Ikuo Kinoshita, Yoichi UTANOHARA, Chihiro Yanagi, Takashi Takata, Akira Yamaguchi,
... turbulent model in our previous study to evaluate CCFL (countercurrent flow limitation) characteristics in a full-scale PWR hot leg (750 mm diameter), and the calculated CCFL characteristics agreed well with the UPTF data at ...
Tópico(s): Fluid Dynamics and Mixing
2012 - Hindawi Publishing Corporation | Science and Technology of Nuclear Installations
Michio MURASE, Akio Tomiyama, Dirk Lucas, Ikuo Kinoshita, Yoichi UTANOHARA, Chihiro Yanagi,
... simulations were done to evaluate countercurrent flow limitation (CCFL) characteristics in a pressurized water reactor (PWR) hot leg with the diameter of 750 mm by using a volume of fluid (VOF) method implemented in the CFD software, FLUENT6.3.26. The calculated CCFL characteristics agreed well with known values including the ...
Tópico(s): Combustion and Detonation Processes
2012 - Taylor & Francis | Journal of Nuclear Science and Technology
... both sides. The new correlation was based on CCFL experiments carried out with a two-phase flow system of air and water under 1 atm with a superficial air velocity range of 1–17 m/s. The CHF experiments were carried out with an inlet water subcooling range of 25–75 K and an inlet water mass flux range of 2–600 kg/m2s under about 1 atm for a 750 mm long, 50 mm wide and 2.25 mm gap flow channel and a 375 mm long, 50 mm wide and 2.80 mm gap flow channel which were heated from both sides. The comparison between the prediction based on the new correlation for the CCFL and the CHF experimental results could provide a ...
Tópico(s): Heat transfer and supercritical fluids
1989 - Elsevier BV | International Journal of Multiphase Flow
Heon Gyu Lee, Minghao Piao, Yong Ho Shin,
... power curve using a cluster center fuzzy logic (CCFL) model, which demonstrated the lowest prediction errors. Kusiak ... data mining techniques. The applied prediction models were CCFL, NNs, k-NN, and an adaptive neuro-fuzzy ... 0.873 0.881 WT1 0.769 0.750 0.937 WT2 0.579 0.423 0. ...
Tópico(s): Evaluation Methods in Various Fields
2015 - Electronics and Telecommunications Research Institute | ETRI Journal
Gwang-Soo Kim, Sang-Duck Kim, Hyuk-Dong Kwon,
... simulated glass beading temperatures of $700^{\circ}C,\;750^{\circ}C$ and $800^{\circ}C$ . The microstructures of the microweld CCFL electrode were observed by using optical microscope, scanning ...
Tópico(s): Advanced Welding Techniques Analysis
2009 - | Journal of Welding and Joining