Investigation of the precessing vortex core reconnection phenomenon

Тип публикации: статья из журнала

Год издания: 2022

Идентификатор DOI: 10.1016/j.ijheatfluidflow.2022.109006

Ключевые слова: flow swirl, les, precessing vortex core, rsm, sliding meshes, vortex reconnection

Аннотация: The paper investigates the unstable behavior of a precessing vortex core in a diffuser behind a rotating swirler. The studies were carried out by experimental methods using a hydrodynamic stand, and by numerical simulation of turbulent flow in the stand in the various flow swirl modes. Both experimental and calculation studies show nonperiodic reconnection of the vortex core and the formation of vortex rings. This instability is observed within a narrow range of the swirl parameter between a weakly swirled flow without vortex breakdown and a strongly swirled flow with forming a stable precessing vortex core. The vortex core reconnection leads to forming a wave disturbance propagating along the vortex rope. © 2022 Elsevier Inc.

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Издание

Журнал: International Journal of Heat and Fluid Flow

Выпуск журнала: Vol. 96

Номера страниц: 109006

ISSN журнала: 0142727X

Издатель: Elsevier B.V.

Персоны

Platonov D.V. (S.S. Kutateladze Institute of Thermophysics SB RAS (IT SB RAS), Novosibirsk, Russian Federation, Siberian Federal University (SFU), Krasnoyarsk, Russian Federation)
Minakov A.V. (S.S. Kutateladze Institute of Thermophysics SB RAS (IT SB RAS), Novosibirsk, Russian Federation, Siberian Federal University (SFU), Krasnoyarsk, Russian Federation)
Sentyabov A.V. (S.S. Kutateladze Institute of Thermophysics SB RAS (IT SB RAS), Novosibirsk, Russian Federation, Siberian Federal University (SFU), Krasnoyarsk, Russian Federation)
Shtork S.I. (S.S. Kutateladze Institute of Thermophysics SB RAS (IT SB RAS), Novosibirsk, Russian Federation)
Skripkin S.G. (S.S. Kutateladze Institute of Thermophysics SB RAS (IT SB RAS), Novosibirsk, Russian Federation)
Lobasov A.S. (S.S. Kutateladze Institute of Thermophysics SB RAS (IT SB RAS), Novosibirsk, Russian Federation)

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