English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Journal Article

Advected Tangent Curves: A General Scheme for Characteristic Curves of Flow Fields

MPS-Authors
/persons/resource/persons123492

Weinkauf,  Tino
Computer Graphics, MPI for Informatics, Max Planck Society;

External Ressource
No external resources are shared
Fulltext (public)
There are no public fulltexts stored in PuRe
Supplementary Material (public)
There is no public supplementary material available
Citation

Weinkauf, T., Hege, H.-C., & Theisel, H. (2012). Advected Tangent Curves: A General Scheme for Characteristic Curves of Flow Fields. Computer Graphics Forum, 31(2012), 825-834. doi:10.1111/j.1467-8659.2012.03063.x.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0015-162E-5
Abstract
We present the first general scheme to describe all four types of characteristic curves of flow fields stream, path, streak, and time lines as tangent curves of a derived vector field. Thus, all these lines can be obtained by a simple integration of an autonomous ODE system. Our approach draws on the principal ideas of the recently introduced tangent curve description of streak lines. We provide the first description of time lines as tangent curves of a derived vector field, which could previously only be constructed in a geometric manner. Furthermore, our scheme gives rise to new types of curves. In particular, we introduce advected stream lines as a parameter-free variant of the time line metaphor. With our novel mathematical description of characteristic curves, a large number of feature extraction and analysis tools becomes available for all types of characteristic curves, which were previously only available for stream and path lines. We will highlight some of these possible applications including the computation of time line curvature fields and the extraction of cores of swirling advected stream lines.