Abstract
The present study aims at describing the evolution of the dynamical response observed for a rectangular section of side ratio (SR) 1.5 tested in a low mass ratio (m*) range. The transition between very low to higher m* regimes for these reference sections has not been documented yet in the reference literature. A wide experimental campaign was performed in a recirculating water channel to investigate a low m* regime, using a purposely designed test rig allowing both static and dynamic tests on light cross-sectional models. In particular displacement and force measurements were taken. The SR was varied in order to evaluate the afterbody effect on models’ aerodynamics and amplitude response. Given that there is evidence for the resultant cross-sections to exhibit a behavior in which VIV and galloping interact in airflow (higher m*), the possible m*
threshold for which such an interaction takes place was determined. This task was well described and related to SR = 1.5, whereas the comparisons with the
other sections developed differently though peculiar response branches. The role of interacting higher harmonics of both VIV and galloping is also briefly discussed.
threshold for which such an interaction takes place was determined. This task was well described and related to SR = 1.5, whereas the comparisons with the
other sections developed differently though peculiar response branches. The role of interacting higher harmonics of both VIV and galloping is also briefly discussed.
Original language | English |
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Title of host publication | 14th International Conference on Wind Engineering |
Number of pages | 8 |
Publication status | Published - 2015 |
Event | International Conference on Wind Engineering 2015 - Porto Alegre, Brazil Duration: 21 Jun 2015 → 26 Jun 2015 Conference number: 14th https://14thinternationalcon.eventize.com.br/ |
Conference
Conference | International Conference on Wind Engineering 2015 |
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Abbreviated title | ICWE 2015 |
Country/Territory | Brazil |
City | Porto Alegre |
Period | 21/06/15 → 26/06/15 |
Internet address |