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Generalized Streak Lines: Analysis and Visualization of Boundary Induced Vortices | IEEE Journals & Magazine | IEEE Xplore

Generalized Streak Lines: Analysis and Visualization of Boundary Induced Vortices


Abstract:

We present a method to extract and visualize vortices that originate from bounding walls of three-dimensional time-dependent flows. These vortices can be detected using t...Show More

Abstract:

We present a method to extract and visualize vortices that originate from bounding walls of three-dimensional time-dependent flows. These vortices can be detected using their footprint on the boundary, which consists of critical points in the wall shear stress vector field. In order to follow these critical points and detect their transformations, affected regions of the surface are parameterized. Thus, an existing singularity tracking algorithm devised for planar settings can be applied. The trajectories of the singularities are used as a basis for seeding particles. This leads to a new type of streak line visualization, in which particles are released from a moving source. These generalized streak lines visualize the particles that are ejected from the wall. We demonstrate the usefulness of our method on several transient fluid flow datasets from computational fluid dynamics simulations.
Published in: IEEE Transactions on Visualization and Computer Graphics ( Volume: 13, Issue: 6, Nov.-Dec. 2007)
Page(s): 1735 - 1742
Date of Publication: 31 December 2007

ISSN Information:

PubMed ID: 17968132

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