Flow structure beneath rotational water waves with stagnation points

Roberto Ribeiro, Paul A. Milewski, André Nachbin

Research output: Contribution to journalArticle

  • 6 Citations

Abstract

The purpose of this work is to explore in detail the structure of the interior flow generated by periodic surface waves on a fluid with constant vorticity. The problem is mapped conformally to a strip and solved numerically using spectral methods. Once the solution is known, the streamlines, pressure and particle paths can be found and mapped back to the physical domain. We find that the flow beneath the waves contains zero, one, two or three stagnation points in a frame moving with the wave speed, and describe the bifurcations between these flows. When the vorticity is sufficiently strong, the pressure in the flow and on the bottom boundary also has very different features from the usual irrotational wave case.

LanguageEnglish
Pages792-814
Number of pages23
JournalJournal of Fluid Mechanics
Volume812
Early online date6 Jan 2017
DOIs
StatusPublished - 10 Feb 2017

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water waves
stagnation point
Water waves
Flow structure
Vorticity
vorticity
Surface waves
spectral methods
surface waves
strip
Fluids
fluids

Keywords

  • Shear layers
  • Surface gravity waves

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Flow structure beneath rotational water waves with stagnation points. / Ribeiro, Roberto; Milewski, Paul A.; Nachbin, André.

In: Journal of Fluid Mechanics, Vol. 812, 10.02.2017, p. 792-814.

Research output: Contribution to journalArticle

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