| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Multiple Modes of Filament Flapping in a Uniform Flow |
| GAO Hao-Tian1, QIN Feng-Hua1**, HUANG Wei-Xi2, SUN De-Jun1 |
1Department of Modern Mechanics, University of Science and Technology of China, Hefei 230026
2Department of Engineering Mechanics, Tsinghua University, Beijing 100084 |
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| Cite this article: |
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GAO Hao-Tian, QIN Feng-Hua, HUANG Wei-Xi et al 2012 Chin. Phys. Lett. 29 094702 |
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Abstract The instability of a flexible filament immersed in uniform flow is studied. A numerical simulation based on the immersed boundary method is conducted on a two-dimensional uniform flow past a flapping filament. Different from the conventional bistability behavior, more regions of initial states of filament corresponding to different modes of motion are partitioned at each freestream velocity, and a new stable mode of motion with smaller flapping amplitude is observed. Mode selection highly depends on these initial states.
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Received: 01 April 2012
Published: 01 October 2012
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| PACS: |
47.11.-j
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(Computational methods in fluid dynamics)
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46.40.Jj
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(Aeroelasticity and hydroelasticity)
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