The challenge of the project is to partially overcome this problem and solve for increasing Weissenberg numbers. This requires more complex solution methods as used in aerodynamics and increases the number of unknowns per gridpoint by a factor of 2 for 2D-problems and 2.5 for 3D cases. Today, the bottleneck of industrial flow simulation for complex technical geometries is grid generation and grid adaption. In the same time flow solvers require high quality grids to compute accurate solutions. The description of the problem geometry serves as an initial grid.
Special techniques fit existing nodes and limit the complexity of resulting cells.
Multiple flow features are captured by controlling refinement by location and direction. The numerical technique is a second order ENO like explicit Finite Volume scheme and is capable of producing accurate solutions on these complex grids. Formulas for computation of volume, centroid and all others moments of arbitrary polyhedra are implemented. The object oriented implementation allows handling of 2D as well as 3D problems. The grid database part can be used for other time dependent conservative equations.