Zobrazeno 1 - 9 of 9 pro vyhledávání: '"Genki Nakai"'
1
Influence of blade corrosion on aerodynamic characteristics of a gas turbine
Autor: Genki Nakai, Masahiro Takayasu, Kazuyasu Sugiyama, Shuichi Ohmori, Shuichi Umezawa, Koichi Yonezawa, Katsuhiko Sugita
Publikováno v: Energy. 230:120665
Gas turbine blades, such as nozzle guide vanes and rotor blades, corrode over time and thus deteriorate, becoming thinner and shorter. In the present study, influences of blade corrosion on aerodynamic characteristics were examined numerically. The p
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7368ba7792bc953cac6a0218497c49c3
https://doi.org/10.1016/j.energy.2021.120665
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2
Investigation of Large-Scale Navigation Behavior of Echolocating Bats During Natural Foraging, Using GPS and Acoustic-GPS Data-Loggers
Autor: Dai Fukui, Emyo Fujioka, Ken Yoda, Genki Nakai, Shizuko Hiryu
Publikováno v: PerCom Workshops
Large-scale flight paths of echolocating Japanese greater horseshoe bats were measured using GPS and acoustic GPS (A-GPS) data-loggers. The bats flew up to 23.6 km away from their roost at a maximum. The measured flight paths were broadly divided int
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::cb9672a4d58bfc8910e8f13e64ed2ff7
https://doi.org/10.1109/percomw.2019.8730837
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3
Degradation of Aerodynamic Performance of an Intermediate-Pressure Steam Turbine Due to Erosion of Nozzle Guide Vanes and Rotor Blades
Autor: Tomoki Kagayama, Genki Nakai, Koichi Yonezawa, Shuichi Umezawa, Kazuyasu Sugiyama, Masahiro Takayasu, Katsuhiko Sugita
Publikováno v: Journal of Engineering for Gas Turbines and Power. 141
Deteriorations of nozzle guide vanes (NGVs) and rotor blades of a steam turbine through a long-time operation usually decrease a thermal efficiency and a power output of the turbine. In this study, influences of blade deformations due to erosion are
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0625d48420fc3bacf7d871956aacde65
https://doi.org/10.1115/1.4040566
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4
A Numerical Investigation of Aerodynamic Characteristics of a Deteriorated Gas Turbine
Autor: Genki Nakai, Kazuyasu Sugiyama, Shuichi Umezawa, Koichi Yonezawa, Katsuhiko Sugita
Publikováno v: Volume 2: I&C, Digital Controls, and Influence of Human Factors; Plant Construction Issues and Supply Chain Management; Plant Operations, Maintenance, Aging Management, Reliability and Performance; Renewable Energy Systems: Solar, Wind, Hydro and Geothermal; Risk Management, Safety and Cyber Security; Steam Turbine-Generators, Electric Generators, Transformers, Switchgear, and Electric BOP and Auxiliaries; Student Competition; Thermal Hydraulics and Computational Fluid Dynamics.
In order to keep a high efficiency of a gas turbine, it is important to make a suitable maintenance. Gas turbine nozzle guide vanes (NGVs) and turbine rotor blades deteriorate through a long-time operation due to various causes such as a particle att
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::caf9c1006e067bce2f7eb20dd3be8b88
https://doi.org/10.1115/power-icope2017-3444
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9
Akademický článek
Degradation of Aerodynamic Performance of an Intermediate-Pressure Steam Turbine Due to Erosion of Nozzle Guide Vanes and Rotor Blades.
Autor: Koichi Yonezawa1 koichi-y@criepi.denken.or.jp, Tomoki Kagayama2 tomoki.kagayama@flow.me.es.osaka-u.ac.jp, Masahiro Takayasu2 masahiro.takayasu@flow.me.es.osaka-u.ac.jp, Genki Nakai2 genki_nakai@mhi.co.jp, Kazuyasu Sugiyama2 Kazuyasu.sugiyama@flow.me.es.osaka-u.ac.jp, Katsuhiko Sugita3 sugita.katsuhiko@tepco.co.jp, Shuichi Umezawa3 umezawa.s@tepco.co.jp
Publikováno v: Journal of Engineering for Gas Turbines & Power. Jan2019, Vol. 141 Issue 1, p1-8. 8p.
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