Content area

Abstract

The dynamics of a cantilever plate clamped at its trailing edge and placed at a moderate angle (\(\alpha \leq 30^{\circ}\)) to a uniform flow are investigated experimentally and numerically, and a large experimental data set is provided. The dynamics are shown to differ significantly from the zero-angle-of-attack case, commonly called the inverted-flag configuration. Four distinct dynamical regimes arise at finite angles: a small oscillation around a small-deflection equilibrium (deformed regime), a small-amplitude flapping motion, a large-amplitude flapping motion and a small oscillation around a large-deflection equilibrium (deflected regime). The small-amplitude flapping motion appears gradually as the flow speed is increased and is consistent with a limit-cycle oscillation caused by the quasi-steady fluid forcing. The large-amplitude flapping motion is observed to appear at a constant critical flow speed that is independent of angle of attack. Its characteristics match those of the large-amplitude vortex-induced vibration present at zero angle of attack. The flow speed at which the plate enters the deflected regime decreases linearly as the angle of attack is increased, causing the flapping motion to disappear for angles of attack greater than \(\alpha \approx 28^{\circ}\). Finally, the effect of aspect ratio on the plate dynamics is considered, with reduced aspect ratio plates being shown to lack sharp distinctions between regimes.

Details

1009240
Identifier / keyword
Title
Dynamics of an inverted cantilever plate at moderate angle of attack
Publication title
arXiv.org; Ithaca
Publication year
2020
Publication date
May 15, 2020
Section
Physics (Other)
Publisher
Cornell University Library, arXiv.org
Source
arXiv.org
Place of publication
Ithaca
Country of publication
United States
University/institution
Cornell University Library arXiv.org
e-ISSN
2331-8422
Source type
Working Paper
Language of publication
English
Document type
Working Paper
Publication history
 
 
Online publication date
2020-12-30
Milestone dates
2020-05-15 (Submission v1)
Publication history
 
 
   First posting date
30 Dec 2020
ProQuest document ID
2404191248
Document URL
https://www.proquest.com/working-papers/dynamics-inverted-cantilever-plate-at-moderate/docview/2404191248/se-2?accountid=208611
Full text outside of ProQuest
Copyright
© 2020. This work is published under http://arxiv.org/licenses/nonexclusive-distrib/1.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.
Last updated
2025-02-07
Database
ProQuest One Academic