Experimental Attenuation of a Trailing Vortex Inspired by Stability Analysis

Ross Richardson, Brian Eckert, Yang Zhang, Louis N. Cattafesta, Adam Edstrand, Yiyang Sun, Peter Schmid, Kunihiko Taira

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

Inspired by a parabolized stability analysis [1], higher-order wake instability modes are targeted via the actuation of a tensioned string in the mean-chord-plane just aft of the trailing edge of a NACA0012 half-wing at 5 angle of attack and a chord based Reynolds number (Rec ) of 1.32 × 105. Stereoscopic Particle Image Velocimetry (SPIV) and a load cell are used to assess the effects of the control just downstream of the trailing edge and 6.5 chords downstream. The results reveal increased turbulence intensity in the wake that is engulfed into the vortex during its formation, and a reduction in the time-averaged streamwise vorticity downstream with minimal loss of lift, providing evidence of the possibility of exciting instability modes for subsequent attenuation of the vortex farther downstream.

Original languageEnglish (US)
Title of host publicationIUTAM Bookseries
PublisherSpringer Science and Business Media B.V.
Pages313-323
Number of pages11
DOIs
StatePublished - 2022
Externally publishedYes

Publication series

NameIUTAM Bookseries
Volume38
ISSN (Print)1875-3507
ISSN (Electronic)1875-3493

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Automotive Engineering
  • Materials Science(all)
  • Aerospace Engineering
  • Acoustics and Ultrasonics
  • Mechanics of Materials
  • Mechanical Engineering

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