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Caterpillar like motion of droplet in a shear flow
Phys. Rev. Fluids 8, 093601 – Published 1 September, 2023
DOI: https://doi.org/10.1103/PhysRevFluids.8.093601
Abstract
This paper is devoted to a specific motion observed for glycerin droplets sliding on a horizontal hydrophobic substrate under the influence of a shear flow. In this regime, the droplet elongates in the flow direction, adopting a rivulet shape. Waves develop on the droplet sheared surface, resulting in a wavy contracting and stretching motion mechanism, similar to the movement of a caterpillar. If long enough, the droplet can break up into several droplets that can be submitted to a pearling instability. Furthermore, these droplets can also coalesce.
Physics Subject Headings (PhySH)
synopsis
Droplets Scoot Like Caterpillars
Published 1 September, 2023
A liquid droplet pushed by the wind contracts and stretches its way along a surface until it breaks apart.
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Article Text
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