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Vortex ropes in draft tube of a laboratory Kaplan hydroturbine at low load: an experimental and LES scrutiny of RANS and DES computational models
Автор | Minakov, A. V. | |
Автор | Platonov, D. V. | |
Автор | Litvinov, I. V. | |
Автор | Shtork, S. I. | |
Автор | Hanjalić, K. | |
Дата внесения | 2018-02-07T07:31:15Z | |
Дата, когда ресурс стал доступен | 2018-02-07T07:31:15Z | |
Дата публикации | 2017-04 | |
Библиографическое описание | Minakov, A. V. Vortex ropes in draft tube of a laboratory Kaplan hydroturbine at low load: an experimental and LES scrutiny of RANS and DES computational models [Текст] / A. V. Minakov, D. V. Platonov, I. V. Litvinov, S. I. Shtork, K. Hanjalić // JOURNAL OF HYDRAULIC RESEARCH. — 2017. — С. 1-18 | |
ISSN | 00221686 | |
URI (для ссылок/цитирований) | https://www.scopus.com/record/display.uri?eid=2-s2.0-85018843476&origin=resultslist&sort=plf-f&src=s&st1=Platonov+D&st2=&sid=12e2ac041904506c24999f8d176838af&sot=b&sdt=b&sl=42&s=AUTHOR-NAME%28Platonov+D%29+AND+PUBYEAR+%3E+2009&relpos=4&citeCnt=0&searchTerm= | |
URI (для ссылок/цитирований) | https://elib.sfu-kras.ru/handle/2311/70012 | |
Аннотация | We report on the examination of several approaches to simulate computationally the unstable regime of a model Kaplan turbine operating at off-design load. Numerical simulations complemented by laboratory experiments have been performed for a 60:1 scaled-down laboratory turbine model using two Reynolds-averaged Navier–Stokes (RANS) models (linear eddy viscosity model (LEVM), and a Reynolds stress model (RSM), including realizable (Formula presented.), k-ω SST, and LRR), detached eddy simulation model (DES), and large eddy simulation model (LES). Unlike the LEVM, the RSM, DES, and LES reproduced the mean velocity components and the intensities of their fluctuations and pressure pulsations well. The underperformance of the LEVM is attributed to the high eddy viscosity as a consequence of an excessive production of the turbulent kinetic energy due to the models’ inability to account for the turbulent stress anisotropy and the stress-stain phase lag, both naturally accounted for by the RSM. This led to a much larger modelled and a smaller resolved turbulent kinetic energy compared to those in the RSM. | |
Тема | DES | |
Тема | hydroturbine | |
Тема | draft tubes | |
Тема | LES | |
Тема | pressure pulsation | |
Тема | RANS | |
Тема | vortex ropes | |
Название | Vortex ropes in draft tube of a laboratory Kaplan hydroturbine at low load: an experimental and LES scrutiny of RANS and DES computational models | |
Тип | Journal Article | |
Тип | Journal Article Preprint | |
Страницы | 1-18 | |
ГРНТИ | 44.09.33 | |
Дата обновления | 2018-02-07T07:31:15Z | |
DOI | 10.1080/00221686.2017.1300192 | |
Институт | Институт инженерной физики и радиоэлектроники | |
Подразделение | Научно-исследовательская часть | |
Подразделение | Кафедра теплофизики | |
Журнал | JOURNAL OF HYDRAULIC RESEARCH | |
Квартиль журнала в Scopus | Q1 | |
Квартиль журнала в Web of Science | Q3 |