Response of a flexible filament in a flowing soap film subject to a forced vibration

Laibing Jia, Qing Xiao, Haijun Wu, Yangeng Wu, Xiezhen Yin

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)
101 Downloads (Pure)


The interactions between flexible plates and fluids are important physical phenomena. A flag in wind is one of the most simplified and classical models for studying the problem. In this paper, we investigated the response of a flag in flow with an externally forced vibration by using flexible filaments and soap film. Experiments show that for a filament that is either in oscillation or stationary, the external forced vibration leads to its oscillation. A synchronization phenomenon occurs in the experiments. A small perturbation leads to a large response of flapping amplitude in response. The insight provided here is helpful to the applications in the flow control, energy harvesting, and bionic propulsion areas.
Original languageEnglish
Article number017101
Number of pages14
JournalPhysics of Fluids
Issue number1
Early online date28 Jan 2015
Publication statusE-pub ahead of print - 28 Jan 2015


  • flexible filament
  • vibration
  • rotating flows
  • land transportation


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