Monday, 3 November 2014
Capitol Ballroom AB (Madison Concourse Hotel)
In atmospheric research, explicit assumptions are often made on the shapes of velocity and vorticity profiles of axisymmetric tornado-like flows. We undertake a two-dimensional numerical study in which several initial configurations of point vortices, approximating Rankine-combined vortex blobs, are developed using the Hamiltonian equations until a nearly steady state is achieved. The resulting vorticity and velocity configurations are studied and demonstrate an rb type of a decay of velocity with -1 < b < 0.
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