Тип публикации: статья из журнала

Год издания: 2019

Идентификатор DOI: 10.1007/s10891-019-02068-5

Ключевые слова: detached eddy simulation, hydraulic turbine, mathematical simulation, pressure pulsations, turbulence, vortex-core precession

Аннотация: The authors have performed numerical simulation of pressure pulsations in the draft tube of a hydraulic turbine that are excited by large-scale vortex structures. Numerical simulation of unsteady transfer in the draft tube in different operating regimes of the turbine has been carried out. It has been shown that the structure of flПоказать полностьюow in the outlet diffuser corresponds to vortex-core flow. Calculated data have been compared with experimental results and their agreement has been shown. To suppress pressure pulsations, a study has been made of the influence of various structural inserts into the draft tube, such as fins, a cross piece, and a hollow cylinder in the draft-tube cone. Consideration has been given to the influence of various constructions on the structure of flow behind the wheel and on pressure pulsations on the draft-tube wall. A comparison has been made of the constructions and optimum parameters have been selected to stabilize the flow in the diffuser of the hydraulic-turbine draft tube. © 2019, Springer Science+Business Media, LLC, part of Springer Nature.

Журнал: Journal of Engineering Physics and Thermophysics

Выпуск журнала: Vol. 92, Is. 6

Номера страниц: 1489-1500

ISSN журнала: 10620125

Издатель: Springer

• Sentyabov A.V (Russian Acad Sci, SS Kutateladze Inst Thermophys, Siberian Branch, 1 Akad Lavrentiev Ave, Novosibirsk 630090, Russia; Siberian Fed Univ, 50-44 Akademgorodok,Off 501, Krasnoyarsk 660036, Russia)
• Minakov A.V (Russian Acad Sci, SS Kutateladze Inst Thermophys, Siberian Branch, 1 Akad Lavrentiev Ave, Novosibirsk 630090, Russia; Siberian Fed Univ, 50-44 Akademgorodok,Off 501, Krasnoyarsk 660036, Russia)
• Platonov D.V (Russian Acad Sci, SS Kutateladze Inst Thermophys, Siberian Branch, 1 Akad Lavrentiev Ave, Novosibirsk 630090, Russia; Siberian Fed Univ, 50-44 Akademgorodok,Off 501, Krasnoyarsk 660036, Russia)
• Dekterev D.A. (Russian Acad Sci, SS Kutateladze Inst Thermophys, Siberian Branch, 1 Akad Lavrentiev Ave, Novosibirsk 630090, Russia; Siberian Fed Univ, 50-44 Akademgorodok,Off 501, Krasnoyarsk 660036, Russia)
• Zakharov A.V (PJSC Power Machines, 3 Vatutin Str,Bldg A, St Petersburg 195009, RussiaArticleEarly Access)
• Semenov G.A. (PJSC Power Machines, 3 Vatutin Str,Bldg A, St Petersburg 195009, RussiaArticleEarly Access)

• Scopus
• Web of Science Core Collection