Hysteresis in forced oscillations of pendant drops
- Chemical Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6224 (United States)
A hysteresis phenomenon has been revealed through experiments conducted with large-amplitude forced oscillations of pendant drops in air. Under strong excitation, the frequency response of a drop forced at constant amplitude exhibits jump behavior; a larger peak response amplitude {epsilon}{sub {down_arrow}} appears at a lower frequency {omega}{sub {down_arrow}} during a downward ({down_arrow}) variation of forcing frequency than during an upward ({up_arrow}) variation, viz. {epsilon}{sub {down_arrow}}{gt}{epsilon}{sub {up_arrow}} and {omega}{sub {down_arrow}}{lt}{omega}{sub {up_arrow}}. Similar results are obtained when forcing amplitude is varied at constant frequency. This behavior is characteristic of a system with a soft nonlinearity. These findings indicate that oscillating pendant drops constitute a convenient system for studying nonlinear dynamics.
- Research Organization:
- Oak Ridge Y-12 Plant
- DOE Contract Number:
- AC05-84OS21400
- OSTI ID:
- 46426
- Journal Information:
- Physics of Fluids (1994), Journal Name: Physics of Fluids (1994) Journal Issue: 6 Vol. 7; ISSN PHFLE6; ISSN 1070-6631
- Country of Publication:
- United States
- Language:
- English
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