Control of turbulent separating and reattaching flow by periodic perturbations

Shigeaki Masuda, Shinnosuke Obi, Kenta Aoki

研究成果: Conference contribution

3 被引用数 (Scopus)

抄録

The effect of periodic perturbation on turbulent separation from a smooth surface of an asymmetric plane-walled diffuser has been experimentally investigated. The perturbation is applied through a spanwise slit on the diffuser wall located upstream of the detachment point. The promotion of the flow reattachment is found remarkable within an optimum frequency range of the perturbation, while the flow detachment point remains unaffected. The momentum transport due to the organized velocity oscillation is explored on the basis of three-level decomposition. It is found that the production of turbulent stress is enhanced by the periodic perturbation in the separated shear layer, that occurs uniquely at the optimum frequency.

本文言語English
ホスト出版物のタイトルTurbulence Control
出版社Publ by ASME
ページ55-61
ページ数7
ISBN(印刷版)0791813762
出版ステータスPublished - 1994 1 1
イベントProceedings of the 1994 ASME Fluids Engineering Division Summer Meeting. Part 9 (of 18) - Lake Tahoe, NV, USA
継続期間: 1994 6 191994 6 23

出版物シリーズ

名前American Society of Mechanical Engineers, Fluids Engineering Division (Publication) FED
193

Other

OtherProceedings of the 1994 ASME Fluids Engineering Division Summer Meeting. Part 9 (of 18)
CityLake Tahoe, NV, USA
Period94/6/1994/6/23

ASJC Scopus subject areas

  • 工学(全般)

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