Aeroelastic assessment of DTU 10 MW Reference Wind Turbine under ice accretion conditions

Kepez, Deniz
In this study, DTU 10 MW Reference Wind Turbine (RWT) is subjected to icing conditions to determine the performance loss and component load changes due to ice accretion. Nine sections along the blade are subjected to icing conditions around the mid-span to the tip of the blade. Ice accretion for these sections is simulated in FENSAP-ICE. FENSAP-ICE simulations consist of flow solving using k-ω SST tur- bulence model, droplet trajectory calculation, and ice accretion on the airfoil section. Ice accreted airfoil sections’ aerodynamic coefficients are simulated through Compu- tational Fluid Dynamics (CFD) software ANSYS Fluent using k-ω SST turbulence model with the same ambient temperature which is used in the FENSAP-ICE simula- tions. Moreover, power generation and component load changes are calculated with an in-house aeroelastic Blade Element Momentum (BEM) tool. At different ambient temperatures and at a mean wind speed of 10 m/s (IEC-IA), annual energy production (AEP) is compared with the clean blade baseline case. For extreme and fatigue com- ponent loads changes, blade root flapwise and edgewise moments, shaft torsion, and tower top and bottom fore-aft and side-side moments are selected. Also, turbine thrust and blade tip to tower clearance is compared. These sensors give a good overview of the blade’s aerodynamic changes due to ice accretion on the blade.
Citation Formats
D. Kepez, “Aeroelastic assessment of DTU 10 MW Reference Wind Turbine under ice accretion conditions,” M.S. - Master of Science, Middle East Technical University, 2023.