Generation of primitives, local and global transformation operations can be done interactively. Free surfaces can be generated. In the latter case, various domains can be combined. Analysis modules The incompressible flow module is in two parts, one for Cartesian and cylindrical coordinate systems and one BFC, although the analysis in both are basically the same. The basic equations are the Navier-Stokes, continuity and energy conservation equations.
Time integration is by the simplified marker and cell method.
Solving the linear equations can be done via Modified Incomplete Cholesky Conjugate Gradient or Scaled Conjugate Gradient. Quite general boundary conditions are allowed. This module can handle flow containing a number of air bubbles and flow in which surface tension cannot be neglected, in addition to ordinary free surface flow. The purpose of the compressible flow analysis module is to analyze high-velocity viscous compressible fluid. The basic equations can be either the Euler or the Thin-Layer equations.