Influence of free-stream turbulence on the movement-induced vibrations of an elongated rectangular cylinder in cross-flow

We present an experimental study of the galloping oscillations of an elongated cylinder. The shape ratio of the rectangular section is 1:2 and we study the influence of free-stream turbulence on the vibrations. The main studied parameter is the turbulence intensity. In smooth flow, the structure is...

Full description

Saved in:
Bibliographic Details
Published in:Journal of wind engineering and industrial aerodynamics 2001-12, Vol.89 (14), p.1383-1395
Main Authors: Hémon, P., Santi, F., Schnoerringer, B., Wojciechowski, J.
Format: Article
Language:English
Subjects:
Aeroelasticity
Galloping
Rectangular cylinder
Turbulence
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We present an experimental study of the galloping oscillations of an elongated cylinder. The shape ratio of the rectangular section is 1:2 and we study the influence of free-stream turbulence on the vibrations. The main studied parameter is the turbulence intensity. In smooth flow, the structure is also submitted to vortex shedding lock-in, which disappears in turbulent flow. At low intensity (4–5%), the critical velocity decreases by comparison with smooth flow. A jump of the Strouhal number is reported and can explain this decrease. At 6% intensity, the critical velocity increases, then the system becomes stable at 7.5%.
ISSN:0167-6105
1872-8197
DOI:10.1016/S0167-6105(01)00126-X