The numerical modeling of fresh concrete flow has become an important tool for the prediction and optimization of casting processes. The modeling of the complex rheological behavior of concrete in the fresh state is still under development, appropriate rheological and numerical approaches to simulate fresh concrete flow have to be considered. The two-phase flow model investigated here is based on computational fluid dynamics, in which the concrete is composed of liquid and solid phase. For handling the free boundary a third phase for the surrounding air is added.

We investigate the suitability of some numerical simulation algorithms, in particular streamline upwinding Petrov-Galerkin finite element methods with adaptive control in time and space.

The implementation is provided in the Kaskade7 finite element toolbox developed at ZIB.