Second-Order Method for Interface Reconstruction in Orthogonal Coordinate Systems.

Colella, P. ; Graves, D. T. ; Greenough, J. A.

Technical Information Center Oak Ridge Tennessee

关键词: Algorithms;    Distribution;    Volume fractions;    Finite differences;    Spherical coordinates;   

RP-ID  :  DE2004834475

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

The authors present a second-order algorithm for reconstructing an interface from a distribution of volume fractions in a general orthogonal coordinate system with derivatives approximated using finite differences. The method approximates the interface curve by a piecewise-linear profile. An integral formulation is used that accounts for the orthogonal coordinate system in a natural way. The authors present results obtained using this method for tracking a material interface between two compressible media in spherical coordinates.