Rotating polygonal depression soliton clusters on the inner surface of a liquid ring.
basic_science · Level V
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- Record sourced from PubMed, PMID 30934365.
- Also identified by DOI 10.1103/PhysRevE.99.023110.
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Abstract
We report an experimental observation of rotating depression soliton sets on the inner surface of a viscous liquid ring, carrying background waves. These occur within a rotating shallow layer of oil inside a stationary cylindrical container. The solitons are organized either in single, two, or regular polygonal (triangle and hexagon) clusters; they travel in unison at a higher speed than the background traveling waves. The spectral power density reveals a possible energy exchange between the soliton clusters and the background mixed radial-azimuthal modulations through wave radiation.