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Frequency Selection and Phase Locking during Aeroelastic Galloping

Leontini, Justin S. and Zhao, Jisheng and Jayatunga, Hewawasam Gamage Kasun Gayantha and Lo Jacono, David and Tan, Boon Thong and Sheridan, John Frequency Selection and Phase Locking during Aeroelastic Galloping. (2014) In: 19th Australasian Fluid Mechanics Conference, 8 December 2014 - 11 December 2014 (Melbourne, Australia).

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This paper presents an analysis of the aeroelastic galloping of an elastically mounted square cross section in a free stream. The classic quasi-steady model [1] is used as a starting point. From this, the relevant time scales and dimensionless groups of the problem are derived. The time scale analysis shows that the mechanism of frequency selection by the oscillating system changes for heavy and light bodies. Results from direct numerical simulations are presented and compared against results from the simplified quasi-steady model, showing that the quasi-steady is quantitatively valid for heavy bodies, and at least generally qualitatively valid for light bodies. Results of experiments on light bodies also show this general qualitative agreement. However, there are also regimes of nonlinear interaction between the galloping and vortex shedding that the simplified model cannot capture.

Item Type:Conference or Workshop Item (Paper)
Additional Information:Thanks to 19th Australasian Fluid Mechanics Conference : http://afms.org.au/19AFMC/ Thanks to Harun Chowdhury, Firoz Alam editors : https://research.monash.edu/en/publications/frequency-selection-and-phase-locking-during-aeroelastic-gallopin
HAL Id:hal-01774974
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Other partners > Monash University (MALAYSIA)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Other partners > Monash University (AUSTRALIA)
Other partners > Swinburne University of Technology (AUSTRALIA)
Laboratory name:
Australian Research Council
Deposited On:24 Apr 2018 09:21

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