CD Laboratory for Advanced methods in river monitoring, modelling and engineering

The detailed understanding of processes taking place in rivers forms the starting point of the research activities. Building on this, mathematical models are developed to describe processes and predict the effects of river engineering measures. Finally, innovative hydraulic engineering methods are used to optimise navigation, flood protection and ecology.

At the centre of research interest is a significant expansion of basic knowledge about the processes, influences and interrelationships of flowing waters. Their utilisation has always been an indispensable factor for mankind, but today the possibilities are increasingly in conflict with their ecological significance. Furthermore, many relationships between the morphology of rivers, ecology and hydraulic engineering measures are still unclear.

At the beginning of the research activities, innovative measurement methods are used to observe and monitor rivers. New measurement methods are being developed to record flow conditions and sediment conditions, which can be used to record data both in the river itself and in riverbank areas and tributaries. An Acoustic Doppler Velocimeter, for example, registers velocity fluctuations in all three spatial directions with high temporal resolution. A newly developed bed shear stress measuring device will determine the forces occurring on the river bed. The extraction technique of so-called freeze cores for the layer-by-layer determination of the structure of the river bed is also being further developed. This will lead to a better understanding of the various processes in rivers, allowing mathematical models to be created.

The design and development of multidimensional mathematical computer models based on the data obtained is a key aspect of the research work. These are used to simulate hydrodynamic scenarios, sediment transport on the river bed and banks, river morphology and various developments in certain habitats. The models are calibrated and validated using the monitoring data. At the same time, the monitoring methods are being optimised for practical use.

The scientific data will subsequently be incorporated into the development and implementation of innovative hydraulic engineering measures. Thanks to the monitoring results and the simulation models, more precise statements can be made about the effects of innovative river engineering measures such as new groyne designs.

The research work creates the scientific basis for sustainable waterway management that fulfils shipping, flood protection and ecological requirements. This can sustainably strengthen waterway management on the Danube, for example.