Time-resolved PIV measurements of the effect of freestream turbulence on horseshoe vortex dynamics

Eric A. Lange, Syed S. Elahi, Stephen P. Lynch

Research output: Chapter in Book/Report/Conference proceedingConference contribution

12 Scopus citations


The horseshoe vortex system is a common flow feature in many natural and industrial flows occurring near the junction of a blunt obstacle with the endwall surface. In industrial settings, such as in high temperature gas turbine engines, the dynamic behavior of the horseshoe vortex has been shown to contribute significantly to the pressure loading and heat transfer behavior on surfaces near the leading edge of the obstacle. Fundamental studies of the horseshoe vortex have characterized its time mean and dynamic behavior at low freestream turbulence conditions, and studies using industry relevant geometries, such as cylindrical pin fin arrays common to cooling applications, have captured dynamic behavior of the vortex at high freestream turbulence. The isolated effect of high freestream turbulence on the dynamic behavior of the vortex, independent of upstream wake effects found in pin fin arrays and other industry geometries, however, is not well understood. This study seeks use high-speed time resolved stereo particle image velocimetry (SPIV) measurements of the horseshoe vortex system taken at varied freestream turbulence levels in front of a single Rood wing obstacle to better understand the isolated effect of freestream turbulence on the vortex position and vortex breakdown dynamics.

Original languageEnglish (US)
Title of host publicationAIAA Aerospace Sciences Meeting
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624105241
StatePublished - 2018
EventAIAA Aerospace Sciences Meeting, 2018 - Kissimmee, United States
Duration: Jan 8 2018Jan 12 2018

Publication series

NameAIAA Aerospace Sciences Meeting, 2018


OtherAIAA Aerospace Sciences Meeting, 2018
Country/TerritoryUnited States

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering


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