Тип публикации: доклад, тезисы доклада, статья из сборника материалов конференций

Конференция: International Conference on Heat and Mass Transfer and Hydrodynamics in Swirling Flows, HMTHSF 2021

Год издания: 2021

Идентификатор DOI: 10.1088/1742-6596/2088/1/012040

Аннотация: The paper presents a study of the instability of the precessing vortex core in the model of the draft tube of a hydraulic turbine. The study was carried out using numerical modeling using various approaches: URANS, RSM, LES. The best agreement with the experimental data was shown by the RSM and LES methods with the modelling of theПоказать полностьюrunner rotation by the sliding mesh method. In the regime under consideration, the precessing vortex rope is subject to instability, which leads to reconnection of its turns and the formation of an isolated vortex ring. Reconnection of the vortex core leads to aperiodic and intense pressure fluctuations recorded on the diffuser wall. © 2021 Institute of Physics Publishing. All rights reserved.

Журнал: Journal of Physics: Conference Series

Выпуск журнала: Vol. 2088, Is. 1

Номера страниц: 12040

ISSN журнала: 17426588

Издатель: IOP Publishing Ltd

• Sentyabov A.V. (Institute of Thermophysics, SB, RAS, 1 Acad. Lavrentiev pr., Novosibirsk, 630090, Russian Federation, Siberian Federal University, 79 Svobodny pr., Krasnoyarsk, 660041, Russian Federation)
• Platonov D.V. (Institute of Thermophysics, SB, RAS, 1 Acad. Lavrentiev pr., Novosibirsk, 630090, Russian Federation, Siberian Federal University, 79 Svobodny pr., Krasnoyarsk, 660041, Russian Federation)
• Minakov A.V. (Institute of Thermophysics, SB, RAS, 1 Acad. Lavrentiev pr., Novosibirsk, 630090, Russian Federation, Siberian Federal University, 79 Svobodny pr., Krasnoyarsk, 660041, Russian Federation)
• Lobasov A.S. (Institute of Thermophysics, SB, RAS, 1 Acad. Lavrentiev pr., Novosibirsk, 630090, Russian Federation, Siberian Federal University, 79 Svobodny pr., Krasnoyarsk, 660041, Russian Federation)

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