@inproceedings{9c5261a1cfb04d21a542bba1e8d00bfc,
title = "Effect of grid-generated turbulence on the dynamics of a flexible filament hanging in cross-flow",
abstract = "This paper describes preliminary experiments carried in a wind tunnel to study the effect of different turbulence intensities (nominally Tu=0.6,0.8 and 1.0%) on the dynamics of a flexible silicone filament (length to diameter ratio L/D=83) hanging in crossflow in the range of reduced velocities of 7 < U* < 108. The turbulence intensity inside the wind tunnel was modified by employing two different grids (porosity β=0.563 and 0.026). At low reduced velocities the filament was statically reconfigured but remained mostly rectilinear along its length. As the reduced velocity was further increased the filament started vibrating, and beyond a certain critical reduced velocity large-amplitude limit-cycle oscillation motions were observed. It is suggested that the turbulence intensity (shear velocity) affects the onset of the flapping motions and the amplitude of these. However, this behavior also depends on the turbulence integral length scale.",
keywords = "Cilia, Filaments, Flutter, Grids, Hot-wire anemometry, Integral length scale, Turbulence",
author = "Jorge Silva-Leon and Andrea Cioncolini",
note = "Publisher Copyright: Copyright {\textcopyright} 2019 ASME.; ASME 2019 International Mechanical Engineering Congress and Exposition, IMECE 2019 ; Conference date: 11-11-2019 Through 14-11-2019",
year = "2019",
doi = "10.1115/IMECE2019-10404",
language = "英语",
series = "ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)",
publisher = "American Society of Mechanical Engineers (ASME)",
booktitle = "Mechanics of Solids, Structures, and Fluids",
}