Two Counter-Rotating Vortices Approaching a Free Surface in a Viscous Fluid
DAVID TAYLOR RESEARCH CENTER BETHESDA MD
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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.
- Fluid Mechanics