Preparatory research 2016

3dParFlow – Investigations and validation of an innovative numerical calculation process for 3D modelling of discrete particles in a flow

The aim of the project is to gather knowledge about the possibilities of modelling moving solids, such as sediments and debris in a flow, using 3D CFD methods, and to use this knowledge for hydraulic engineering investigations. Specialist software packages supply solutions and suitable numerical approaches. However, the investigation of the physical plausibility and observance of natural laws are a prerequisite in order to be able to use a numerical model in practice. In the course of this work, selected solution approaches will be examined on the basis of an existing, objective test stand. In the medium term, the calibrated model generated in this way offers, for example, the possibility of developing measurement foundations for the dimensioning of armourstones, which are used in special situations to fill energy transformation plants / stilling basins at spillways.

 

The full report can be downloaded here:

Carstensen_Bericht_Vorlaufforschung_2016_3dParFlow.pdf

Preparatory research 2017

ARES – Waste reduction by recycling epoxy resin-based materials

Fibre-reinforced plastics already have a wide variety of applications because of their excellent properties. Further significant growth is expected in future. The reasons for this are the increasing production figures in aviation and in the automotive industry, where they are combined with the required reduction of CO2 fleet emissions by 2020, and the upswing in the use of wind turbines.

Around 72 percent of high-priced composites reinforced with carbon fibres contain a matrix made from epoxy resins. As three-dimensionally connected plastics, these cannot be melted down or dissolved and therefore cannot be recycled in the same way as thermoplastics. However, chemical recycling offers a solution: The connecting points are split chemically using a special reagent, thus breaking the network down into smaller, soluble molecules. The fibres can then be separated from the matrix. The solution is evaporated and the polymer and fibres are then put to new use separately from each other. However, it has not yet been possible to apply this principle technologically to epoxy resins. The aim of the project is to find a reaction system that enables epoxy resin networks to be almost completely broken down simply and quickly, with a low energy outlay.

 

The full report can be downloaded here:

Wehnert_Bericht_Vorlaufforschung_2017_ARES.pdf