@inproceedings{94b436ef7c234e7a9cb4ac8c4b95a636,
title = "Spectral Analysis of a Cylinder Wake Interacting with Coherent Structures in a Turbulent Boundary Layer",
abstract = "The spectral and spatial behavior of the wake of a small cylinder immersed in a turbulent boundary layer at different wall-normal heights is studied and compared to a canonical turbulent boundary layer. Time-resolved particle image velocimetry measurements were taken downstream of the position where the cylinder is immersed. Measurements were also taken in of the unperturbed turbulent boundary layer in the same region without the cylinder for the same freestream velocity. The pre-multiplied energy spectra was computed for the seven cases and compared. Changes to the spectral content of the wake and of the boundary layer were observed for cases where the cylinder was nearer to the wall, while little interaction was observed for cases with the cylinder outside of the boundary layer thickness. Spectral proper orthogonal decomposition modes were calculated at wavelengths relevant to the wake vortex shedding and to the energetic turbulent structures and modifications to the modes were observed for cases with strong interaction. Vortex detection methods were used to visualize the wake and suggested that both a breakdown of periodicity of the vortex spacing and an overall spatial meandering of the wake may be responsible for the spectral modifications observed.",
author = "{De Jes{\'u}s}, {Elizabeth Torres} and Palash Waghmare and Theresa Saxton-Fox",
note = "Publisher Copyright: {\textcopyright} 2024 by the American Institute of Aeronautics and Astronautics, Inc.; AIAA SciTech Forum and Exposition, 2024 ; Conference date: 08-01-2024 Through 12-01-2024",
year = "2024",
doi = "10.2514/6.2024-0075",
language = "English (US)",
isbn = "9781624107115",
series = "AIAA SciTech Forum and Exposition, 2024",
publisher = "American Institute of Aeronautics and Astronautics Inc, AIAA",
booktitle = "AIAA SciTech Forum and Exposition, 2024",
}