Yuji Nakanishi
Kanagawa University
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Featured researches published by Yuji Nakanishi.
Transactions of the Japan Society of Mechanical Engineers. B | 2007
Yuji Nakanishi; Tsuneaki Fujii
The flow in a rotating Pelton bucket is simulated by a Moving-Particle Semi-Implicit Method (MPS). In the MPS method, the solid wall of the bucket has to be represented by the same calculation particles as those for fluid, though a Pelton bucket has complicated 3D shape. Therefore, a simple method arranging the wall particles is introduced. As the first step of MPS simulation, the jet entering the bucket is determined by relative jet paths. The free sheet flow on the rotating bucket is simulated and discharging flow pattern is compared with the photograph taken in the model test.
Archive | 1996
Yuji Nakanishi; Takashi Kubota
The IEC model acceptance test code stipulates that there is no scale effect in Pelton turbines[1]. One of the primary reasons why the scale effect in Pelton turbines is ignored, so far, is that the complicated unsteady free water-sheet flow on Pelton buckets prevents to numerically analyze the loss mechanism. Another reason is that the positive scale effect in the closed conduit flow from the turbine inlet to the nozzle outlet tends to compensate for the negative scale effect in free water-sheet flow on the buckets.
Journal of Fluid Science and Technology | 2009
Yuji Nakanishi; Tsuneaki Fujii; Sho Kawaguchi
Journal of Fluid Science and Technology | 2009
Yuji Nakanishi; Shouichiro Iio; Yoji Takahashi; Akito Kato; Toshihiko Ikeda
Journal of Mechanical Science and Technology | 2016
Bin Huang; Yuji Nakanishi; Toshiaki Kanemoto
Transactions of the Japan Society of Mechanical Engineers. B | 2007
Yuji Nakanishi; Tsuneaki Fujii; Koki Wachi
The Fourteenth International Offshore and Polar Engineering Conference | 2004
Toshinori Kashiwabara; Nobuo Nakajima; Toshiaki Kanemoto; Yuji Nakanishi
The Twelfth ISOPE Pacific/Asia Offshore Mechanics Symposium | 2016
Toshiaki Kanemoto; Nak-Joong Lee; Man-Woong Heo; Bin Huang; Yuji Nakanishi; Yuki Funami
Journal of Power and Energy Engineering | 2017
Yuki Funami; Yuji Nakanishi; Nak-Joong Lee; Bin Huang; Toshiaki Kanemoto
Journal of Thermal Science | 2016
Yuki Funami; Ryo Hasuya; Kotaro Tanabe; Yuji Nakanishi