Zobrazeno 1 - 10
of 38
pro vyhledávání: '"Won-Gu Joo"'
Autor:
Jun-Won Suh, Hyeon-Mo Yang, Yong-In Kim, Kyoung-Yong Lee, Jin-Hyuk Kim, Won-Gu Joo, Young-Seok Choi
Publikováno v:
Engineering Applications of Computational Fluid Mechanics, Vol 13, Iss 1, Pp 744-762 (2019)
This research aimed to systematically maximize hydraulic efficiency and suction specific speed for mixed-flow pump using a commercial CFD packages and optimization tool. First, mixed-flow pump was initially designed according to the traditional desig
Externí odkaz:
https://doaj.org/article/13e6646d81dc4739ab2097fdda7e5702
Autor:
Jun-Won Suh, Seung-Jun Kim, Hyeon-Mo Yang, Moo-Sung Kim, Won-Gu Joo, Jungwan Park, Jin-Hyuk Kim, Young-Seok Choi
Publikováno v:
Energies, Vol 14, Iss 3, p 525 (2021)
S-shaped characteristics in turbine mode are prone to instabilities in associated transient processes. A single value of the speed factor corresponds to multiple values of the discharge factor, having the possibility of changing the operating point a
Externí odkaz:
https://doaj.org/article/812c874287024a33b894e873f1f8e3ad
Autor:
Seung-Jun Kim, Young-Seok Choi, Yong Cho, Jong-Woong Choi, Jung-Jae Hyun, Won-Gu Joo, Jin-Hyuk Kim
Publikováno v:
Energies, Vol 13, Iss 11, p 2806 (2020)
Undesirable flow phenomena in Francis turbines are caused by pressure fluctuations induced under conditions of low flow rate; the resulting vortex ropes with precession in the draft tube (DT) can degrade performance and increase the instability of tu
Externí odkaz:
https://doaj.org/article/31d30f6b7848474e9a00a35354bff559
Publikováno v:
Energies, Vol 10, Iss 9, p 1334 (2017)
Most multi-phase pumps used in crude oil production have been developed to satisfy certain pressure specifications. In the design of these pumps, the flow characteristics of the posterior stage are different from those of the prior stage. For this re
Externí odkaz:
https://doaj.org/article/cd6a68b98c4a4de4af3d544623a63bcf
Publikováno v:
Renewable Energy. 171:1395-1417
Unusual flow characteristics such as reverse flow, rotating stalls, flow recirculation, and stationary vortexes can induce high dynamic forces and torque variations on the entire system, creating a positive slope in the discharge-head curve. To avoid
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2dab06caea628c3870f417263330c656
https://doi.org/10.1016/j.renene.2021.03.013
https://doi.org/10.1016/j.renene.2021.03.013
Publikováno v:
Journal of Mechanical Science and Technology. 34:2845-2853
Axial flow fans of outdoor units are equipped with specially shaped winglets and shroud for reduction of the flow-induced noise. In this study, the unsteady state flow field and the characteristics of the flow-induced noise according to the applicati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::60a442901b990f7a661bf92c65e89568
https://doi.org/10.1007/s12206-020-0617-2
https://doi.org/10.1007/s12206-020-0617-2
Publikováno v:
Renewable Energy. 154:986-1004
The importance of renewable energy will increase rapidly due to the global regulation of carbon dioxide emissions to cope with global warming. However, renewable energy has a high output variation because of the fluctuating characteristics of the ene
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4d09f81742adbf5a5a8f7218eac58e3c
https://doi.org/10.1016/j.renene.2020.03.017
https://doi.org/10.1016/j.renene.2020.03.017
Autor:
Jong-Woong Choi, Won-Gu Joo, Seung-Jun Kim, Young-Seok Choi, Jung-Jae Hyun, Kim Jin Hyuk, Yong Cho
Publikováno v:
The KSFM Journal of Fluid Machinery. 23:16-22
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b53035e2affef6849c3858a4a9eb4f52
https://doi.org/10.5293/kfma.2020.23.2.016
https://doi.org/10.5293/kfma.2020.23.2.016
Autor:
Won-Gu Joo, Dae Hyun Koo, Seok Woo Son, Geun Nam Gung, Jun Ho Kim, Jun Young Park, Byong Kuk Kim
Publikováno v:
The KSFM Journal of Fluid Machinery. 23:35-41
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6ed22e65de94c8008cd3453f0d3bcb8d
https://doi.org/10.5293/kfma.2020.23.2.035
https://doi.org/10.5293/kfma.2020.23.2.035
Publikováno v:
Transactions of the Korean Society of Mechanical Engineers - B. 43:329-337
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2d39bfba894cac545733a8c51cc00031
https://doi.org/10.3795/ksme-b.2019.43.5.329
https://doi.org/10.3795/ksme-b.2019.43.5.329