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Showing 1 to 2 of 2 for “"Crow instability"”.
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A numerical study of laminar to turbulent evolution and free-surface interaction of a vortex ring
… depths, the expanding ring is unstable to the Crow instability but its dominant mode is predetermined by the prior development of the Widnall instability. The presence of opposite-signed vorticity, due to surface curvature, affects the ring dynamics at the surface. The interaction of a …
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Numerical simulations of vortices near free and solid surfaces
The interaction of vortices passing near free and solid surfaces has been examined using direct numerical simulation (DNS). A computer code was developed which solves the unsteady, three-dimensional Navier-Stokes equations for incompressible flow. A critical element of the numerical scheme is the …