Zobrazeno 1 - 10
of 31
pro vyhledávání: '"Takahide NAGAHARA"'
Publikováno v:
Nihon Kikai Gakkai ronbunshu, Vol 85, Iss 878, Pp 19-00294-19-00294 (2019)
The flow structures of a submerged vortex that appears in a model pump sump have been fully clarified by performing large eddy simulation (LES) of a model vortex in a simplified computational model. The computational model had a sufficiently fine gri
Externí odkaz:
https://doaj.org/article/2dd8f79187fa4d1d82d22b028b613a4e
Publikováno v:
Nihon Kikai Gakkai ronbunshu, Vol 85, Iss 875, Pp 19-00072-19-00072 (2019)
The origin and formation mechanism of a submerged vortex and an air-entraining vortex have been fully clarified by large-eddy simulation (LES) that used approximately 2 billion hexahedral elements with maximum resolution of 0.255 mm and was applied t
Externí odkaz:
https://doaj.org/article/270e7051c7cc4a44b4ee3c9c04116c38
Publikováno v:
Nihon Kikai Gakkai ronbunshu, Vol 84, Iss 857, Pp 17-00363-17-00363 (2018)
For designing a high-performance mixed-flow pump, control and suppression of performance-curve instability is crucial. For doing so, clarification of the essential flow physics that leads to the performance-curve instability is crucial in addition to
Externí odkaz:
https://doaj.org/article/bb74af8f80084acaa0499566e1f513ff
Publikováno v:
Nihon Kikai Gakkai ronbunshu, Vol 82, Iss 834, Pp 15-00533-15-00533 (2016)
A technique for high-accuracy predicting performance curve instability in pumps and clarification of the phenomenon in order to control the instability is required for designing high performance pumps. We analyzed internal flow of a test mixed-flow p
Externí odkaz:
https://doaj.org/article/aad4ad5873184c35be0d0131392a5ef9
Publikováno v:
Transactions of the JSME (in Japanese). 85:19-00294
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::02be1a3038d87cd4f66eb018ea7e997f
https://doi.org/10.1299/transjsme.19-00294
https://doi.org/10.1299/transjsme.19-00294
Publikováno v:
Transactions of the JSME (in Japanese). 85:19-00072
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6067d874ae9dfde2cf720ad0c85127dc
https://doi.org/10.1299/transjsme.19-00072
https://doi.org/10.1299/transjsme.19-00072
Publikováno v:
Journal of Fluids Engineering. 142
The origin, formation mechanism, and dynamics of suction vortices in a pump sump have been clarified by large eddy simulation (LES) applied to two different computational models. The first one is a pump-sump model with uniform flow entering a water c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f05f81f7f294c93a5a16e29f8b98a650
https://doi.org/10.1115/1.4045953
https://doi.org/10.1115/1.4045953
Publikováno v:
Volume 3B: Fluid Applications and Systems.
The flow structures of a submerged vortex that appears in a model pump sump were numerically investigated by performing large eddy simulation (LES) of a model vortex in a simplified computational model with a sufficiently fine grid that could resolve
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bf402ee5067cbcc6f3cb95943ee7174a
https://doi.org/10.1115/ajkfluids2019-5205
https://doi.org/10.1115/ajkfluids2019-5205
Publikováno v:
Transactions of the JSME (in Japanese). 82:15-00533
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::70c1d95e2371b72886e50240191767fd
https://doi.org/10.1299/transjsme.15-00533
https://doi.org/10.1299/transjsme.15-00533
Autor:
Fumio Shimizu, Toshiyuki Sato, Masaki Fuchiwaki, Kazuhiro Tanaka, Takahide Nagahara, Akira Inoue
Publikováno v:
International Journal of Fluid Machinery and Systems. 4:76-83
This study highlights especially the mechanism of vortex cavitation occurrence from the end of the suction duct in a double-suction volute pump and pump oscillation which causes cavitation noise from the pump. In this study, full 3D numerical simulat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::64de2f85afddd39874392c22e2ace107
https://doi.org/10.5293/ijfms.2011.4.1.076
https://doi.org/10.5293/ijfms.2011.4.1.076