The helicopter group at the DLR in Göttingen has been actively involved in the development
of measurement techniques for unsteady flows, particularly as they apply to the problems …

This paper numerically investigates four methods, namely mesh refinement, General
Richardson Extrapolation (GRE), Grid Convergence Index (GCI), and the fitting method, in …

The wind is one of the most promising green energy resources that replenishes itselves in
less than a human lifetime without depleting the planet's resources. According to the …

Multi-megawatt floating vertical axis wind turbines (VAWTs) are a promising solution to
exploit offshore wind energy resources in deep water sites. At this large-scale, the VAWT's …

This paper investigates the development of the dynamic stall of a full straight blade vertical
axis wind turbine (SB-VAWT) using computational fluid dynamic modeling for solving the 2D …

The recent growing interest in urban air mobility (UAM) worldwide has led to the demand for
physical analyses of the aerodynamic performance and aeroacoustic characteristics of …

Dynamic mode decomposition is applied to investigate the unsteady flowfield around a
pitching airfoil. The extracted flow structures are termed as dynamic mode decomposition …

HELICOPTER rotor blades encounter a wide range of aerodynamic conditions during cruise
flight, varying from transonicflow, with moderate angles of attack on the advancing blade …

This paper proposes a numerical method to predict the ice accretion shapes and
aerodynamic performance of rotating vertical axis wind turbine (VAWTs) under icing …

High-resolution computational fluid dynamics (CFD) predictions of static and dynamic stall of
a finite-span ONERA OA209 wing were validated against the wind tunnel test …