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

Autor:	Frits H. Post, Arthur E. Mynett, Alex J. de Boer, I. Ari Sadarjoen
Rok vydání:	1998
Předmět:	Shearing (physics) Curvilinear coordinates Computer science Particle tracking velocimetry Tetrahedron Geometry Hexahedron Grid Computational science
Zdroj:	Eurographics ISBN: 9783211832097 Visualization in Scientific Computing
DOI:	10.1007/978-3-7091-7517-0_7
Popis:	Particle tracing in curvilinear grids often employs decomposition of hexahedral cells into 5 tetrahedra. This method has shortcomings when applied to σ-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 σ-transformed grids, however large the shearing. Results are presented of applying the technique to a real world simulation. Comparisons are made between the accuracy and speed of the 6-decomposition and the 6-decomposition methods.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::af34a3153c43392db99c9415f8386f2b https://doi.org/10.1007/978-3-7091-7517-0_7 Zobrazit plný text záznamu