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Parallel Vectors Criteria for Unsteady Flow Vortices
May/June 2008 (vol. 14 no. 3)
pp. 615-626
ASCII Text
x 
 
Raphael Fuchs, Ronald Peikert, Helwig Hauser, Filip Sadlo, Philipp Muigg, "Parallel Vectors Criteria for Unsteady Flow Vortices," IEEE Transactions on Visualization and Computer Graphics, vol. 14, no. 3, pp. 615-626, May/June, 2008.
 
 
BibTex
x
 
@article{ 10.1109/TVCG.2007.70633,
author = {Raphael Fuchs and Ronald Peikert and Helwig Hauser and Filip Sadlo and Philipp Muigg},
title = {Parallel Vectors Criteria for Unsteady Flow Vortices},
journal ={IEEE Transactions on Visualization and Computer Graphics},
volume = {14},
number = {3},
issn = {1077-2626},
year = {2008},
pages = {615-626},
doi = {http://doi.ieeecomputersociety.org/10.1109/TVCG.2007.70633},
publisher = {IEEE Computer Society},
address = {Los Alamitos, CA, USA},
}
 
 
RefWorks Procite/RefMan/Endnote
x 
 
TY - JOUR
JO - IEEE Transactions on Visualization and Computer Graphics
TI - Parallel Vectors Criteria for Unsteady Flow Vortices
IS - 3
SN - 1077-2626
SP615
EP626
EPD - 615-626
A1 - Raphael Fuchs,
A1 - Ronald Peikert,
A1 - Helwig Hauser,
A1 - Filip Sadlo,
A1 - Philipp Muigg,
PY - 2008
KW - unsteady flow visualization
KW - vortex feature extraction
VL - 14
JA - IEEE Transactions on Visualization and Computer Graphics
ER -
 
Feature-based flow visualization is naturally dependent on feature extraction. To extract flow features, often higher-order properties of the flow data are used such as the Jacobian or curvature properties, implicitly describing the flow features in terms of their inherent flow characteristics (e.g., collinear flow and vorticity vectors). In this paper we present recent research which leads to the (not really surprising) conclusion that feature extraction algorithms need to be extended to a time-dependent analysis framework (in terms of time derivatives) when dealing with unsteady flow data. Accordingly, we present two extensions of the parallel vectors based vortex extraction criteria to the time-dependent domain and show the improvements of feature-based flow visualization in comparison to the steady versions of this extraction algorithm both in the context of a high-resolution dataset, i.e., a simulation specifically designed to evaluate our new approach, as well as for a real-world dataset from a concrete application.

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Index Terms:
unsteady flow visualization, vortex feature extraction
Citation:
Raphael Fuchs, Ronald Peikert, Helwig Hauser, Filip Sadlo, Philipp Muigg, "Parallel Vectors Criteria for Unsteady Flow Vortices," IEEE Transactions on Visualization and Computer Graphics, vol. 14, no. 3, pp. 615-626, May-June 2008, doi:10.1109/TVCG.2007.70633
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