Vortex cores of inertial particles
Günther T, Theisel H (2014)
Publication Type: Journal article
Publication year: 2014
Journal
Book Volume: 20
Pages Range: 2535-2544
Article Number: 6875993
Journal Issue: 12
DOI: 10.1109/TVCG.2014.2346415
Abstract
The cores of massless, swirling particle motion are an indicator for vortex-like behavior in vector fields and to this end, a number of coreline extractors have been proposed in the literature. Though, many practical applications go beyond the study of the vector field. Instead, engineers seek to understand the behavior of inertial particles moving therein, for instance in sediment transport, helicopter brownout and pulverized coal combustion. In this paper, we present two strategies for the extraction of the corelines that inertial particles swirl around, which depend on particle density, particle diameter, fluid viscosity and gravity. The first is to deduce the local swirling behavior from the autonomous inertial motion ODE, which eventually reduces to a parallel vectors operation. For the second strategy, we use a particle density estimation to locate inertial attractors. With this, we are able to extract the cores of swirling inertial particle motion for both steady and unsteady 3D vector fields. We demonstrate our techniques in a number of benchmark data sets, and elaborate on the relation to traditional massless corelines.
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Germany (DE)How to cite
APA:
Günther, T., & Theisel, H. (2014). Vortex cores of inertial particles. IEEE Transactions on Visualization and Computer Graphics, 20(12), 2535-2544. https://dx.doi.org/10.1109/TVCG.2014.2346415
MLA:
Günther, Tobias, and Holger Theisel. "Vortex cores of inertial particles." IEEE Transactions on Visualization and Computer Graphics 20.12 (2014): 2535-2544.
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