A measure of spatial disorder in particle methods

In the present work we describe a numerical algorithm which gives a measure of the disorder in particle distributions in two and three dimensions. This applies to particle methods in general, disregarding the fact they use topological connections between particles or not. The proposed measure of par...

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Bibliographic Details
Published in:Computer physics communications 2014-10, Vol.185 (10), p.2609-2621
Main Authors: Antuono, M., Bouscasse, B., Colagrossi, A., Marrone, S.
Format: Article
Language:English
Subjects:
Algorithms
Computational fluid dynamics
Disorders
Engineering Sciences
Fluid flow
Joints
Lattices
Meshless methods
Particle disorder
Particle methods
Perturbation methods
Smoothed particle hydrodynamics
Three dimensional
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Summary:In the present work we describe a numerical algorithm which gives a measure of the disorder in particle distributions in two and three dimensions. This applies to particle methods in general, disregarding the fact they use topological connections between particles or not. The proposed measure of particle disorder is tested on specific configurations obtained through the perturbation of a regular lattice. It turns out that the disorder measure may be qualitatively related to the mean absolute value of the perturbation. Finally, some applications of the proposed algorithm are shown by using the Smoothed Particle Hydrodynamics (SPH) method.
ISSN:0010-4655
1879-2944
DOI:10.1016/j.cpc.2014.06.008