A few two-dimensional prisms with rectangular cross section were tested in the wind tunnel. The models were free to vibrate in the plunging mode only and the smooth flow was perpendicular to a face of the cylinders. These clean and simple geometries are of great importance in bluff-body aerodynamics and in the wind engineering practice, showing a pronounced proclivity to several aeroelastic instabilities ranging from vortex-induced vibration to galloping, that in some cases can strongly interact. This paper presents also the results of analytical models which were applied to some particular test cases. The comparison with the experimental data underscored the complexity of the aeroelastic response of these structures.
Aeroelastic instabilities of rectangular cylinders with various side ratios / Claudio Mannini; Antonino M. Marra; Tommaso Massai; Gianni Bartoli. - ELETTRONICO. - (2014), pp. 1-4. (Intervento presentato al convegno XIII Conference of the Italian Association for Wind Engineering tenutosi a Genova nel 22-25 giugno 2014).
Aeroelastic instabilities of rectangular cylinders with various side ratios
MANNINI, CLAUDIO;MARRA, ANTONINO MARIA;MASSAI, TOMMASO;BARTOLI, GIANNI
2014
Abstract
A few two-dimensional prisms with rectangular cross section were tested in the wind tunnel. The models were free to vibrate in the plunging mode only and the smooth flow was perpendicular to a face of the cylinders. These clean and simple geometries are of great importance in bluff-body aerodynamics and in the wind engineering practice, showing a pronounced proclivity to several aeroelastic instabilities ranging from vortex-induced vibration to galloping, that in some cases can strongly interact. This paper presents also the results of analytical models which were applied to some particular test cases. The comparison with the experimental data underscored the complexity of the aeroelastic response of these structures.
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