Abstract
We report the spontaneous formation of spiral patterns observed at a downward-facing free surface of a horizontal liquid film. The surface is unstable to the Rayleigh-Taylor instability and the resulting liquid discharge from the film can occur in the form of propagating liquid curtains. They are born at the film circular periphery and exhibit patterns of inwardly rotating spiral arms. With the help of a phenomenologically constructed cellular automaton, we show that the patterns arise from the phase locking leading to periodic liquid discharge at constant flow rate over the whole film surface.
2 More- Received 24 August 2018
DOI:https://doi.org/10.1103/PhysRevLett.122.014502
© 2019 American Physical Society
Physics Subject Headings (PhySH)
Synopsis
Antispiral Formation at a Liquid Surface
Published 10 January 2019
Liquid falling from a horizontal film displays an intriguing pattern of inwardly rotating spirals.
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