A piecewise linear approach to volume tracking a triple point

An approach to volume tracking three materials is presented that, in contrast with the so‐called ‘onion‐skin’ methodology, assumes the existence of a ‘triple point’ at which two interfaces between three materials intersect. The reconstruction of any cell that contains three materials is iterative: the approach is to locate a point of intersection between two interfaces that minimizes a given error expression. The advantages and limitations of the algorithm are presented via a series of advection tests that demonstrate that triple points can be reconstructed and advected just as well as simpler interfaces in typical applications.