JOURNAL ARTICLE

Bifurcation of rotating surface switching at different spin-up accelerations.

  • Published In: Physics of Fluids, 2024, v. 36, n. 10. P. 1 1 of 3

  • Database: Academic Search Ultimate 2 of 3

  • Authored By: Skripkin, Sergey G.; Naumov, Igor V. 3 of 3

Abstract

The article focuses on the experimental discovery of rotating polygonal vortex structures (m = 1, 2) in a system of two immiscible fluids—water and oil—within a cylindrical container with a rotating bottom disk. Three distinct steady states were identified: stable funnel (SF), cycling switching (CS), and rotating twin funnel (RTF), which depend on disk acceleration and Reynolds number at a fixed aspect ratio (h/R = 1). The study highlights that disk acceleration time significantly influences the onset and stability of these flow regimes, with transitions linked to Ekman spin-up times. These findings extend classical rotating polygon research by demonstrating new flow behaviors in immiscible fluid systems, with implications for mixing and vortex control in engineering applications.

Additional Information

  • Source:Physics of Fluids. 2024/10, Vol. 36, Issue 10, p1
  • Document Type:Article
  • Subject Area:Science
  • Publication Date:2024
  • ISSN:1070-6631
  • DOI:10.1063/5.0233197
  • Accession Number:180632165
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