Opposition control of turbulent taylor-couette flow

Christophe Le Dauphin, Koji Fukagata

研究成果: Conference contribution

1 引用 (Scopus)

抜粋

Direct numerical simulations (DNS) of an opposition-controlled turbulent Taylor-Couette (TC) flow is performed. Opposition control is then applied. Significant drag reduction is achieved by opposition control and the skin friction drag is decreased up to 31% with the wall-normal control. Strong modifications of the turbulence statistics in the near-wall region are observed. The streamwise velocity fluctuation is greatly reduced and shows a more symmetric profile. The origin of the boundary layers seems to undergo a displacement toward the middle of the flow. Besides, the visualization of the coherent flow structures shows a significant reduction of their number when the control is applied. In a further step, the combination of wall-normal and spanwise control, as well as the influence of the gain on the input response are investigated. The efficiency of this control strategy is then compared with the opposition control.

元の言語English
ホスト出版物のタイトルASME-JSME-KSME 2011 Joint Fluids Engineering Conference, AJK 2011
ページ3895-3903
ページ数9
エディションPARTS A, B, C, D
DOI
出版物ステータスPublished - 2011 12 1
イベントASME-JSME-KSME 2011 Joint Fluids Engineering Conference, AJK 2011 - Hamamatsu, Japan
継続期間: 2011 7 242011 7 29

出版物シリーズ

名前ASME-JSME-KSME 2011 Joint Fluids Engineering Conference, AJK 2011
番号PARTS A, B, C, D
1

Other

OtherASME-JSME-KSME 2011 Joint Fluids Engineering Conference, AJK 2011
Japan
Hamamatsu
期間11/7/2411/7/29

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes

フィンガープリント Opposition control of turbulent taylor-couette flow' の研究トピックを掘り下げます。これらはともに一意のフィンガープリントを構成します。

  • これを引用

    Le Dauphin, C., & Fukagata, K. (2011). Opposition control of turbulent taylor-couette flow. : ASME-JSME-KSME 2011 Joint Fluids Engineering Conference, AJK 2011 (PARTS A, B, C, D 版, pp. 3895-3903). (ASME-JSME-KSME 2011 Joint Fluids Engineering Conference, AJK 2011; 巻数 1, 番号 PARTS A, B, C, D). https://doi.org/10.1115/AJK2011-25007