Shock / boundary-layer interaction control using three-dimensional bumps for transonic wings

H. Ogawa, H. Babinsky, M. Pätzold, T. Lutz

研究成果: 著書/レポートタイプへの貢献会議での発言

7 引用 (Scopus)

抄録

Three-dimensional bumps have been developed and investigated, aiming at the two major objectives of shock-wave / boundary-layer interaction control, i.e. drag reduction and suppression of separation, simultaneously. An experimental investigation has been conducted for a default rounded bump in channel now at University of Cambridge and a computational study has been performed for a spanwise series of rounded bumps mounted on a transonic aerofoil at University of Stuttgart. Observed in both cases are wave drag reduction owing to A-shock structures produced by three-dimensional surface bumps and mild control effects on the boundary layer. The effects of rough surface and tall extension have been investigated as well as several geometric variations and multiple bump configurations. A double configuration of narrow rounded bumps has been found to best perform amongst the tested, considerably reducing wave drag through a well-established A-shock structure with little viscous penalty and thus achieving substantial overall drag reduction. Counter-rotating streamwise vortex pairs have been produced by some configurations as a result of local flow separation, but they have been observed to be confined in relatively narrow wake regions, expected to be beneficial in suppressing large-scale separation under off-design condition despite increase of viscous drag. On the whole a large potential of three-dimensional control with discrete rounded bumps has been demonstrated both experimentally and numerically, and experimental investigation of bumps fitted on a transonic aerofoil or wing is suggested toward practical application.

元の言語英語
ホスト出版物のタイトルCollection of Technical Papers - 45th AIAA Aerospace Sciences Meeting
ページ3967-3989
ページ数23
出版物ステータス出版済み - 7 2 2007
外部発表Yes
イベント45th AIAA Aerospace Sciences Meeting 2007 - Reno, NV, 米国
継続期間: 1 8 20071 11 2007

出版物シリーズ

名前Collection of Technical Papers - 45th AIAA Aerospace Sciences Meeting
6

会議

会議45th AIAA Aerospace Sciences Meeting 2007
米国
Reno, NV
期間1/8/071/11/07

Fingerprint

drag reduction
Drag reduction
transonic flow
wave drag
wings
drag
boundary layers
Boundary layers
boundary layer
shock
Airfoils
Drag
configurations
viscous drag
flow separation
Flow separation
interactions
penalties
Shock waves
wakes

All Science Journal Classification (ASJC) codes

  • Space and Planetary Science
  • Aerospace Engineering

これを引用

Ogawa, H., Babinsky, H., Pätzold, M., & Lutz, T. (2007). Shock / boundary-layer interaction control using three-dimensional bumps for transonic wings. : Collection of Technical Papers - 45th AIAA Aerospace Sciences Meeting (pp. 3967-3989). (Collection of Technical Papers - 45th AIAA Aerospace Sciences Meeting; 巻数 6).

Shock / boundary-layer interaction control using three-dimensional bumps for transonic wings. / Ogawa, H.; Babinsky, H.; Pätzold, M.; Lutz, T.

Collection of Technical Papers - 45th AIAA Aerospace Sciences Meeting. 2007. p. 3967-3989 (Collection of Technical Papers - 45th AIAA Aerospace Sciences Meeting; 巻 6).

研究成果: 著書/レポートタイプへの貢献会議での発言

Ogawa, H, Babinsky, H, Pätzold, M & Lutz, T 2007, Shock / boundary-layer interaction control using three-dimensional bumps for transonic wings. : Collection of Technical Papers - 45th AIAA Aerospace Sciences Meeting. Collection of Technical Papers - 45th AIAA Aerospace Sciences Meeting, 巻. 6, pp. 3967-3989, 45th AIAA Aerospace Sciences Meeting 2007, Reno, NV, 米国, 1/8/07.
Ogawa H, Babinsky H, Pätzold M, Lutz T. Shock / boundary-layer interaction control using three-dimensional bumps for transonic wings. : Collection of Technical Papers - 45th AIAA Aerospace Sciences Meeting. 2007. p. 3967-3989. (Collection of Technical Papers - 45th AIAA Aerospace Sciences Meeting).
Ogawa, H. ; Babinsky, H. ; Pätzold, M. ; Lutz, T. / Shock / boundary-layer interaction control using three-dimensional bumps for transonic wings. Collection of Technical Papers - 45th AIAA Aerospace Sciences Meeting. 2007. pp. 3967-3989 (Collection of Technical Papers - 45th AIAA Aerospace Sciences Meeting).
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