Boundary layer trips on airfoils at low reynolds numbers

Christopher A. Lyon, Michael S. Selig, Andy P. Broeren

Research output: Contribution to conferencePaperpeer-review


Three categories of boundary layer trips (single 2-D plain, multiple 2-D plain, and 3-D trips) were tested on the M06-13-128, E374, and SD7037 airfoils over the Reynolds numbers of 100,000 to 300,000. Flow visualization and drag data were acquired for a number of trip heights and locations. To facilitate comparisons between airfoils, trips were located relative to untripped laminar separation locations. Drag data showed dramatic drag reductions for relatively thin trips, with thicker trips having slightly better performance. The trip location proved to be of little significance for trips located upstream of laminar separation. Little advantage was seen in utilizing multiple 2-D trips or complex 3-D trips over single 2-D trips. Finally, through the application of trips, it was not possible to improve the performance of an airfoil exhibiting large laminar separation bubbles over that of an untripped airfoil with small bubbles.

Original languageEnglish (US)
StatePublished - 1997
Event35th Aerospace Sciences Meeting and Exhibit, 1997 - Reno, United States
Duration: Jan 6 1997Jan 9 1997


Other35th Aerospace Sciences Meeting and Exhibit, 1997
Country/TerritoryUnited States

ASJC Scopus subject areas

  • Space and Planetary Science
  • Aerospace Engineering


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