Effects of an Oscillating Flap on the Main Airfoil Unsteady Lift in Grid Turbulence

Herricos Stapountzis*, Athanasios Barlas, Georgios Papageorgiou, Athanasios Patsiouras

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearch

Abstract

A wing of NACA 0015 profile and Aspect Ratio 2.4 fitted with a Trailing Edge Flap was tested in a wind tunnel for both smooth and turbulent flow conditions at a Re number 108000. The unsteady lift on the wing was measured with and without the flap. Two types of flap excitation were tried: One was of the “open loop” type in which the flap was subjected to sinusoidal pitching oscillations while the wing was set to a constant angle of attack. In the second, “closed loop” mode, the excitation signal fed into the flap originated from the unsteady lift of the wing itself. The phase lag between those signals was changed and it was found that it played a significant role in the suppression of the main wing unsteady lift.
Original languageEnglish
Title of host publicationAdvances in Critical Flow Dynamics Involving Moving/Deformable Structures with Design Applications
EditorsMarianna Braza , Kerry Hourigan , Michael Triantafyllou
Number of pages11
PublisherSpringer
Publication date2021
Pages493-503
ISBN (Print)978-3-030-55593-1
ISBN (Electronic)978-3-030-55594-8
DOIs
Publication statusPublished - 2021
EventIUTAM Symposium on Critical Flow Dynamics involving Moving/Deformable Structures with Design applications - Satorini, Greece
Duration: 18 Jun 201822 Jun 2018

Conference

ConferenceIUTAM Symposium on Critical Flow Dynamics involving Moving/Deformable Structures with Design applications
CountryGreece
CitySatorini
Period18/06/201822/06/2018
SeriesNotes on Numerical Fluid Mechanics and Multidisciplinary Design
Volume147
ISSN1612-2909

Keywords

  • Trailing edge flap
  • Wind turbine load alleviation
  • Smart blades
  • Unsteady aerodynamics
  • Active flow control

Fingerprint Dive into the research topics of 'Effects of an Oscillating Flap on the Main Airfoil Unsteady Lift in Grid Turbulence'. Together they form a unique fingerprint.

Cite this