Published in Journal of Physics: Conference Series
Recent experimental and numerical evidence has shown that the cumulative wake generated from the overlapping of multiple wakes within a wind farm could reduce power performance and enhance fatigue loads of wind turbines installed in neighboring downstream wind farms and may also extend up to distances one order of magnitude larger than those typica...
Published in Journal of Physics: Conference Series
Artificial Neural Networks (ANNs) are being applied as a faster alternative to Computational Fluid Dynamics (CFD) for wind turbine engineering wake models. Unfortunately, ANNs can fail to generalize if the data is insufficient. Physics-Informed Neural Networks (PINNs) can improve convergence while lowering the required data amounts. This paper inve...
Wind energy stands out as a capital component of the renewable energy portfolio and has accordingly shown an exponential growth in recent years. Due to the limited regions with high wind energy potential, wind turbines are usually clustered in wind farms, whose power output will be impacted by wake interactions. Therefore, predicting the wake's evo...
International audience
The impact that span-wise shape modifications on a wing haveon the dynamics of trailing vortices is studied using towing tank experiments. The focusis on understanding if wake hazard can be reduced through intelligent wing design. Thebaseline wing is rectangular, variations in wing-loading configurations are then examined,including high-lift loadin...
This work presents an actuator disk-like body force method designed for propeller modeling, which is based on a full coupling between computational fluid dynamics (CFD) and blade element theory (BET). An analysis is conducted on the model to identify best practices for source term distribution. It is found that the source term volume shape has no i...
A novel method for generating turbulent inflow boundary conditions for aeroelastic computations is proposed, based on interfacing hybrid hot-wire and particle image velocimetry measurements performed in a wind tunnel to a full-scale load simulation conducted with FAST. This approach is based on the use of proper orthogonal decomposition (POD) to in...
[ES] En el diseño de vehículos aerodinámicos pueden aparecer interferencias debido a la deflexión del aire de unas alas sobre otras. Por otro lado, la interferencia generada por cuerpos romos como el fuselaje, motores o tren de aterrizaje se manifiesta en forma de estelas. Estas estructuras turbulentas en las que el flujo es caótico y donde el coef...
The importance of aerodynamic efficiency in the cycling sport is well known. Simple calculations demonstrate the considerable impact of just a few percentages in drag savings on the outcome of a competition where the margins can be incredibly small. Achieving a drag reduction can, however, be challenging as the flow topology of a cyclist is extreme...
We investigate the wake structure and the three-dimensional stability of the two-dimensional von Karman vortex street developing in the wake of a permeable circular cylinder. The flow through the porous medium, assumed homogenous and isotropic, is described by the Darcy law, with a Navier slip coupling condition at the interface with the pure fluid...
