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TitleA Tetrahedra-Based Stream Surface Algorithm (In Proceedings)
inProceedings of Visualization 2001
Author(s) Gerik Scheuermann, T. Bobach, Hans Hagen, Karim Mahrous, Bernd Hamann, Ken Joy, Wolfgang Kollmann
Editor(s) Thomas Ertl, Ken Joy, A. Varshney
Year 2001
PublisherIEEE Computer Society Press
AddressLos Alamitos, California
OrganizationIEEE
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Abstract This paper presents a new algorithm for the calculation of stream surfaces for tetrahedral grids. It propagates the surface through the tetrahedra, one at a time, calculating the intersections with the tetrahedral faces. The method allows us to incorporate topological information from the cells, e.g., critical points. The calculations are based on barycentric coordinates, since this simplifies theory and algorithm. The stream surfaces are ruled surfaces inside each cell, and their construction is started with line segments on the faces. Our method supports the analysis of velocity fields resulting from computational fluid dynamics (CFD) simulations.