1 Masdar Institute, Khalifa University of Science and Technology, Masdar City, P.O. Box 54224, Abu Dhabi, United Arab Emirates.
2 Department of Mechanical, Industrial and Aerospace Engineering, Concordia University, Montréal, Québec, Canada H3G 1M8.

Rotating polygonal depression soliton clusters on the inner surface of a liquid ring.

Phys Rev E. 2019 Feb;99(2-1):023110

Authors: Ait Abderrahmane H, Sedeh PS, Ng HD, Vatistas GH

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.

PMID: 30934365 [PubMed]