Particle Tracing in σ-Transformed Grids using Tetrahedral 6-Decomposition

Sadarjoen, Ari; Boer, Alex J. de; Post, Frits H.; Mynett, Arthur E.

Particle Tracing in σ-Transformed Grids using Tetrahedral 6-Decomposition

Files

07_sadar.pdf (724.32 KB)

Date

1998

Authors

Sadarjoen, Ari
Boer, Alex J. de
Post, Frits H.
Mynett, Arthur E.

Publisher

The Eurographics Association

Abstract

Particle tracing in curvilinear grids often employs decomposition of hexahedral cells into 5 tetrahedra. This method has shortcomings when applied to sigma-transformed grids, a grid type having strongly sheared cells, commonly used in hydrodynamic simulations. This paper describes an improved decomposition method into 6 tetrahedra. It is shown that this method is robust in sigma-transformed grids, however large the shear- ing. Results are presented of applying the technique to a real world sim- ulation. Comparisons are made between the accuracy and speed of the 5-decomposition and the 6-decomposition methods.

        @inproceedings{10.2312:vissym19981006
,
booktitle = {Visualization in Scientific Computing '98
},
editor = {Bartz, Dirk
},
title = {{Particle Tracing in σ-Transformed Grids using Tetrahedral 6-Decomposition
}},
author = {Sadarjoen, Ari and 
Boer, Alex J. de and 
Post, Frits H. and 
Mynett, Arthur E.
},
year = {1998
},
publisher = {The Eurographics Association
},
ISSN = {-
},
ISBN = {3-211-83209-2
},
DOI = {10.2312/vissym19981006
}
}