Doppler Speckles - A Multi-Purpose Vector field Visualization Technique for Arbitrary Meshes

We present a technique that allows a comprehensive view to volumetric vector fields on arbitrary mesh structures. The technique is inherently independent from the topological structure of the underlying grid by using vertex-based splats that are parameterized in color, shape and transparency by the vector field. It can be easily attached to volumes, surfaces or lines to depict the properties of a vector field, yielding more insight than standard techniques such vector arrows or streamlines. We demonstrate this technique upon datasets from computational fluid dynamics and astrophysics, comprising uniform grids, curvilinear multiblocks and particle systems.