CTU WP6 – work done so far

Simulation of form filling with SCC– Implementation of high-order 2D Taylor-Hood

element– Implementation of new 3D free surface tracking

algorithm (level sets)– Verification of the model using benchmarks and

simple lab-scale experiments

CTU WP6 – future work

• Numerical model– Resolve issues with pressure oscillations using XFEM – Implementation of problem-specific boundary conditions

• Formwork/concrete interaction, including effects of various coatings and release agents

• Formwork air escape

– Extension of the model to account reinforcement• Explicit modeling too demanding (complexity of the model)• Anisotropic model based on homogenization is considered.

– Verification and validation of the model• Relations between flow pattern and fiber

distribution/orientation will be proposed (CTU+DTI)

Simulation Examples – DTI V FunnelPlastic viscosity 39 [Pa.s]Yield stress 38 [Pa]

Simulation Examples - DTI Beam casting

Plastic viscosity 39 [Pa.s]Yield stress 38 [Pa]

Note: This simulation reveals some problems we have, particularly modeling air escapingthrough the formwork – if there is a wall, air cannot escape and protects concrete to flow inside. In the presented example, some part of top deck has been open, so that some air escaped (as well as some concrete). This affected the results, particularly at later stages of simulation.