Two Counter-Rotating Vortices Approaching a Free Surface in a Viscous Fluid

Abstract

Numerical computations have been performed to investigate the interaction of two counter-rotating vortices with a free surface in a viscous, incompressible fluid where the motion is considered two-dimensional and laminar. The decaying vortices deform the free surface during their approach and they can display the phenomenon of 'rebounding.' The numerical scheme is based on the Navier-Stokes equations and uses boundary-fitted coordinates to accommodate the locally high vorticity of the moving vortices and the nonlinear deformation of the free surface. Vortices; Free-surface interaction; Two dimensional flow; Surface signature; Viscous incompressible flow; Boundary value problems.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1989
Accession Number
ADA210495

Entities

People

  • Hans J. Lugt
  • Samuel Ohring

Tags

Communities of Interest

  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Boundary Layer
  • Boundary Value Problems
  • Computational Fluid Dynamics
  • Computational Science
  • Computations
  • Differential Equations
  • Equations
  • Fluid Dynamics
  • Fluid Flow
  • Froude Number
  • Geometry
  • Grids
  • Navier Stokes Equations
  • Partial Differential Equations
  • Steady State
  • Two Dimensional
  • Viscous Flow

Fields of Study

  • Physics

Readers

  • Computational Fluid Dynamics (CFD)
  • Fluid Dynamics.
  • Fluid Mechanics and Fluid Dynamics.