An algorithm for tracking fluid particles in numerical simulations of homogeneous turbulence
Journal of Computational Physics
Adaptive Polygonalization of Implicitly Defined Surfaces
IEEE Computer Graphics and Applications
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This paper presents a visualization technique based on particle tracking. The technique consists in defining a set of points distributed on a closed surface and follow the surface deformations as the velocity field changes in time. Deformations of the surface contains information about dynamics of the flow; in particular, it is possible to identify zones where flow stretching and foldings occur. Because the points on the surface are independent each other, it is possible to calculate the trajectory of each point concurrently. Two parallel algorithms are studied; the first one for a shared memory Origin 2000 supercomputer and the second one for a distributed memory PC cluster. The technique is applied to a fluid moving by natural convection inside a cubic container.