|Title||A Tetrahedra-Based Stream Surface Algorithm
(In Proceedings) |
|in||Proceedings of Visualization 2001|
Gerik Scheuermann, T. Bobach, Hans Hagen, Karim Mahrous, Bernd Hamann, Ken Joy, Wolfgang Kollmann |
Thomas Ertl, Ken Joy, A. Varshney |
|Publisher||IEEE Computer Society Press|
|Address||Los Alamitos, California|
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.