OPM/opm-core — pull request #72 by atgeirr (2012-10-17 09:26:38+00:00)
Title: Velocity interpolation for DG methods

Move velocity interpolation out of TransportModelTracerTofDiscGal internals,
create an abstract interface for it, and use it to implement two concrete classes.

The simplest, VelocityInterpolationConstant, behaves identically to the pre-existing
code in the TMTTDG class.

A new one, VelocityInterpolationECVI, implements the extended corner velocity interpolation method,
see the article:
R. A. Klausen, A. F. Rasmussen, and A. F. Stephansen. Velocity interpolation and streamline tracing on irregular geometries. Comput. Geosci. Vol. 16, No. 2, pp. 261-276, 2012. DOI: 10.1007/s10596-011-9256-0.