Sprecher
Beschreibung
A good understanding of fluid flows inside the ocean is crucial to develop digital twins of it. In our new Laboratory of Numerical Mechanics and Flow Measurement Technology at the University of Applied Sciences in Kiel (FH Kiel) we are currently conducting measurements of fluid structures with optical measurement techniques such as Particle Image Velocimetry (PIV) and Temperature-Sensitive Paint (TSP) in order to validate our numeric simulations of fluid flows with Computational Fluid Dynamics (CFD).
The flow around different geometric objects, such as cylinders, flat plates and airfoils have been tested inside our FlowLab, a small water tunnel which has been specially designed for PIV measurements. In a recent experiment inside the FlowLab a flapping airfoil was tested to study vortex formation and visualization of unsteady fluid dynamics. In a different setup TSP was used to study vortex formation behind a cylinder and visualize the formation of horse shoe vortices. Together with the German Aerospace Center (DLR) the TSP technology has also been used to study the influence of steps and gaps on the location of laminar-turbulent transition on a flat plate inside a cryogenic wind tunnel.
Currently we are also conducting CFD calculations of wind turbine rotor blades in order to compare them with experimental measurements obtained with the help of an aerodynamic glove mounted to the rotor blade. This innovative approach of combining measurements with numeric calculations can also be promising for upcoming developments of digital twins of the ocean together with GEOMAR.
