Open AccessGeometric Methods for Vortex Extraction
Author(s) -
Sadarjoen, I. Ari,
Post, Frits H.
Publication year - 1999
Publication title -
eurographics
Language(s) - English
Resource type - Reports
DOI - 10.2312/vissym19991010
Subject(s) - vortex , extraction (chemistry) , feature extraction , feature (linguistics) , computer science , geometric shape , mathematics , algorithm , computational fluid dynamics , geometry , mathematical analysis , geometric modeling , numerical analysis , physics , vortex shedding , artificial intelligence , basis (linear algebra) , geometric data analysis , classical mechanics
This paper presents two vortex detection methods which are based on the geometric properties of streamlines. Unlike traditional vortex detection methods, which are based on point-samples of physical quantities, one of our methods is also effective in detecting weak vortices. In addition, it allows for quantitative feature extraction by calculating numerical attributes of vortices. Results are presented of applying these methods to CFD simulation data sets.
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