Zobrazeno 1 - 10
of 40
pro vyhledávání: '"Hideaki Yokohata"'
Autor:
Mikimasa KAWAGUCHI, Ryoutaro NAKAYAMA, Lijuan MA, Keiya NISHIDA, Hideaki YOKOHATA, Masanobu KOUTOKU, Jun NISHIKAWA, Akira NAKASHIMA, Yoichi OGATA
Publikováno v:
Journal of Fluid Science and Technology, Vol 16, Iss 4, Pp JFST0023-JFST0023 (2021)
Methods of decreasing the CO2 emissions of the internal combustion engine have been suggested. For example, an engine can be designed with a high compression ratio and/or a downsizing turbocharger. However, these methods generate high combustion temp
Externí odkaz:
https://doaj.org/article/c2681161a94441218a854829ca4394f4
Autor:
Guanming Guo, Masaya Kamigaki, Yuuya Inoue, Keiya Nishida, Hitoshi Hongou, Masanobu Koutoku, Ryo Yamamoto, Hideaki Yokohata, Shinji Sumi, Yoichi Ogata
Publikováno v:
Energies, Vol 14, Iss 13, p 3953 (2021)
The turbulent pulsating flow and heat transfer in straight and 90° curved square pipes are investigated in this study. Both experimental temperature field measurements at the cross-sections of the pipes and conjugate heat transfer (CHT) simulation w
Externí odkaz:
https://doaj.org/article/40699ed71bfa41bdaffc0918b85c3739
Publikováno v:
Journal of Fluid Science and Technology, Vol 14, Iss 1, Pp JFST0005-JFST0005 (2019)
Cavitation in the nozzle plays an important role in the atomization of the discharged liquid jet. Because of this, understanding in-nozzle cavitation is very important for the control of spray characteristics. However, in-nozzle cavitation is not ful
Externí odkaz:
https://doaj.org/article/d29dbd95f684496f80c660a82f0ed54b
Publikováno v:
Journal of Fluid Science and Technology, Vol 14, Iss 1, Pp JFST0002-JFST0002 (2019)
Much attention has recently been given to high-efficiency cooling of pistons in internal combustion engines by cooling channels because of improved thermal efficiency. Cooling a piston efficiently requires a grasp of the gas-liquid multiphase flow st
Externí odkaz:
https://doaj.org/article/de1ba378b66d4daf984a3310183e9311
Publikováno v:
Journal of Fluid Science and Technology, Vol 13, Iss 1, Pp JFST0007-JFST0007 (2018)
The high efficiency cooling of pistons in internal combustion engines by oil jets has recently received widespread attention. To date, curved circular oil jet nozzles have been commonly employed. However, although liquid jets from straight circular n
Externí odkaz:
https://doaj.org/article/1631b763e2ed4c0796dd30028c9c2fe5
Autor:
Junichi OKI, Yukika KUGA, Yoichi OGATA, Keiya NISHIDA, Ryo YAMAMOTO, Kazuhiro NAKAMURA, Haruna YANAGIDA, Hideaki YOKOHATA
Publikováno v:
Journal of Fluid Science and Technology, Vol 13, Iss 1, Pp JFST0005-JFST0005 (2018)
The present experimental study deals with a pulsatile turbulent flow simulating the exhaust flow of an automotive engine. In the experiments, a four-cylinder engine is used as an exhaust-flow generator to realize flow conditions close to those in an
Externí odkaz:
https://doaj.org/article/bd13218f48bf49dfa7152151eb2052b3
Autor:
Junichi OKI, Masafumi IKEGUCHI, Yoichi OGATA, Keiya NISHIDA, Ryo YAMAMOTO, Kazuhiro NAKAMURA, Haruna YANAGIDA, Hideaki YOKOHATA
Publikováno v:
Journal of Fluid Science and Technology, Vol 12, Iss 2, Pp JFST0014-JFST0014 (2017)
A pulsatile turbulent flow within an S-shaped double bend pipe is experimentally and numerically studied to characterize the flow field in conditions resembling an automotive engine environment. Particle image velocimetry (PIV) measurements were carr
Externí odkaz:
https://doaj.org/article/70cf7a310eea4d888209f6ef328da951
Publikováno v:
Multiphase Science and Technology. 35:69-86
It has been pointed out that cavitation inside a fuel injector plays an important role in the fuel spray characteristics, which affects the thermal efficiency and exhaust gas emissions. Recently, it was pointed out that when needle lift is low, not o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bd717613a1e42779bc18d6c5971a4cb2
https://doi.org/10.1615/multscientechn.2022045214
https://doi.org/10.1615/multscientechn.2022045214
Autor:
Yuki Kato, Guanming Guo, Masaya Kamigaki, Kenmei Fujimoto, Mikimasa Kawaguchi, Keiya Nishida, Hitoshi Hongou, Masanobu Koutoku, Hideaki Yokohata, Shinji Sumi, Ryo Yamamoto, Yoichi Ogata
Publikováno v:
Proceedings of the 8th World Congress on Mechanical, Chemical, and Material Engineering.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f5ccb6676d94088650ea9af63bc9fd82
https://doi.org/10.11159/htff22.140
https://doi.org/10.11159/htff22.140
Autor:
Hiroyuki Takebayashi, Satoshi Hinokuma, Hiroshi Murakami, Akira Miyoshi, Set Naing, Hideaki Yokohata, Koki Naito, Daisuke Shimokuri, Yuhei Matsumoto
Publikováno v:
Combustion Science and Technology. 193:2137-2157
In this study, detailed surface reaction mechanisms for CO/O2 system on Pt/Al2O3 and Rh/Al2O3 have been developed based on the measurements of gaseous and surface species. The conventional conversi...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7966ddf3a24e452ec6fb60ba4a49461a
https://doi.org/10.1080/00102202.2020.1731486
https://doi.org/10.1080/00102202.2020.1731486