Stationary Rossby-Haurwitz wave (no remeshing) (17.1MB)

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Solution of the barotropic vorticity equation (BVE) on a rotating sphere using a point vortex approximation on a set of Lagrangian particles and panels.  

The test case is a stationary Rossby-Haurwitz wave; although the fluid particles move, the red-blue pattern of vorticity should remain fixed.  

Without remeshing, the particles and panels quickly become distorted and tangled, which leads to a breakdown in the computational method.

© Peter Bosler 2013