In this study flows over and through modelled aquatic plant canopies are investigated to better understand the interaction between the outer flow and the interior of the canopy. This is relevant for the resistance exerted by the canopy and the exchange of oxygen, pollutants, etc. between flow and canopy. Here, very detailed numerical simulations are conducted to resolve the canopy with all individual blades with an unprecedented detail. The configurations studied are densely arranged, highly flexible ribbons, which overall represent a situation very close to real seagrass meadows, much closer than in other studies. Unexpected, for example, is the observation that the blades move quite far up-wards and even further in horizontal direction.

Centrifugal pumps are employed in various industrial and engineering applications to transport two-phase mixtures as liquid and non-condensable gas. Several examples of the two-phase pump operation can be found, e.g., in the chemical and process industry or geothermal power stations. Predicting two-phase flows in centrifugal pumps with state-of-the-art computational fluid dynamic (CFD) methods is only possible by accepting significant uncertainties.

In the joint BMWi Lufo VI project DARWIN, the Center for Information Services and High Performance Computing (ZIH) and the Chair of Turbomachinery and Aero Engines (TFA) at the TU Dresden are working in cooperation with Rolls Royce Germany on the further development, application and validation of innovative digital simulation and design methods to improve the interdisciplinary understanding of engine systems. Work includes improving load balancing of highly parallelized coupled simulation codes, measuring surface roughness and wear effects and feeding them back into simulation models, as well as applying machine learning (ML) methods to predict flow fields.

Gas-liquid contactors (GLCs) are one of the core technologies utilized in the chemical industry, which play a critical role for reactant conditioning, chemical conversion and separation processes. Within the scope of this project, we are developing a high-performance falling film reactors for CO2 capture via engineering the way CO2 in gas phase mixes with the liquid absorbent at the reactive gas-liquid interface (micro-mixing phenomena). The major impact of the study will be the performance increase at large scale, which would pave the way for the transition of CO2 capture technologies into practice.

The cost of energy produced by wind turbines has been undergoing a steady reduction. Wind energy supplied 15% of the electricity demand of the European Union in 2019. Since rotor blades are the determining component for both performance and loads, they are the objective of further optimizations. To obtain high efficiencies, an increased use of special aerodynamic profiles is observed possessing large areas of low-resistance, which means laminar flow is maintained. In order to design such profiles, it is necessary to include the laminar-turbulent transition in CFD simulations of wind turbine blades. Thus, the objective of the project is to carry out high-fidelity numerical simulations of the flow around a wind turbine blade at a realistic

The energy transition is a global challenge with major economic and social impact. Future combustion devices will have to adapt to enable low-carbon or carbon-free sustainable power generation. The design of high efficiency devices and the use of alternative fuels is heavily supported by computational fluid dynamics simulation. However, detailed simulations of complete combustion systems are still computationally unfeasible to this day. This illustrates the need for accurate but less computationally demanding models. In this project, a direct numerical simulation (DNS) of turbulent flame wall interaction was conducted to provide further physical insight to near wall combustion processes and to contribute to the development of novel