A pendulum in a flowing soap film

• Published in: Physics of fluids (1994) Vol. 25; no. 4
• Main Authors: Bandi, M. M., Concha, A., Wood, R., Mahadevan, L.
• Format: Journal Article
• Language: English
• Published: 01.04.2013
• Subjects: Dynamical systems; Dynamics; Filaments; Imaging; Instability; Pendulums; Soap films; Vorticity

We consider the dynamics of a pendulum made of a rigid ring attached to an elastic filament immersed in a flowing soap film. The system shows an oscillatory instability whose onset is a function of the flow speed, length of the supporting string, the ring mass, and ring radius. We characterize this...