Localized Flow Analysis of 2D and 3D Vector Fields

Wiebel, Alexander; Garth, Christoph; Scheuermann, Gerik

Localized Flow Analysis of 2D and 3D Vector Fields

Files

143-150.pdf (10.69 MB)

Date

2005

Authors

Wiebel, Alexander
Garth, Christoph
Scheuermann, Gerik

Publisher

The Eurographics Association

Abstract

In this paper we present an approach to the analysis of the contribution of a small subregion in a dataset to the global flow. To this purpose, we subtract the potential flow that is induced by the boundary of the sub-domain from the original flow. Since the potential flow is free of both divergence and rotation, the localized flow field retains the original features. In contrast to similar approaches, by making explicit use of the boundary flow of the subregion, we manage to isolate the region-specific flow that contains exactly the local contribution of the considered subdomain to the global flow. In the remainder of the paper, we describe an implementation on unstructured grids in both two and three dimensions. We discuss the application of several widely used feature extraction methods on the localized flow, with an emphasis on topological schemes.

        @inproceedings{:10.2312/VisSym/EuroVis05/143-150
,
booktitle = {EUROVIS 2005: Eurographics / IEEE VGTC Symposium on Visualization
},
editor = {Ken Brodlie and David Duke and Ken Joy
},
title = {{Localized Flow Analysis of 2D and 3D Vector Fields
}},
author = {Wiebel, Alexander and 
Garth, Christoph and 
Scheuermann, Gerik
},
year = {2005
},
publisher = {The Eurographics Association
},
ISSN = {1727-5296
},
ISBN = {3-905673-19-3
},
DOI = {/10.2312/VisSym/EuroVis05/143-150
}
}