Validation of BEM and Vortex-wake models with numerical tunnel data, TKI WoZ VortexLoads WP2

Within the framework of the TKI WoZ VortexLoads project, CFD simulations were carried out to verify the earlier observed differences in dynamic loading and the resultant fatigue equivalents between BEM and vortex wake codes in turbulent inflow. Hereto a ’numerical’ wind tunnel was set-up subjecting a rigid (or non-flexible) version of the AVATAR...

TKI WoZ VortexLoads, Final report

The TKI WoZ VortexLoads project consortium has made a great contribution to more accurate wind turbine design load calculations, paving the way for further reductions in the cost of wind energy. The previously observed reduction in fatigue loading using vortex-wake models instead of the Blade Element Momentum method has been confirmed by using...

Analytical verification of flutter prediction for large wind turbine rotor blades

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Comparison of Phatas Versions and the Wind turbine Module

The program Phatas is developed at ECN wind energy for the design and analysis of horizontal axis wind turbines. Phatas is part of the wind turbine design package Focus which is developed at WMC. Recently Phatas is re-structured such that it can be called as a module by existing computer programs for the (hydro-) dynamics of a floating support....

The ICORASS feasibility study

"This is the final report of the joint TU-D/ECN project ICORASS (Integral Composite Offshore Rotor Active Speed Stall control) . This project was performed to investigate the feasibility of a very large offshore wind turbine consisting of integrated components to offer a major improvement in the levelized production costs and reliability of...

State of the art of rotor blade buckling tools: Inventory of the Dutch BLADKNIK project

Within the Dutch research project BLADKNIK buckling load prediction tools were developed for application to wind turbine rotor blade design. As basis for further investigations and validations within this project, Buckling load analyses were performed on existing rotor blade models. For many of these models experimental buckling loads are...

Buckling load prediction tools for rotor blades

Within the Dutch research project BLADKNIK buckling load prediction tools were improved and/or developed to be used in wind turbine rotor blade design. These tools include programs that model buckling of a complete cross-section (Finstrip) and programs that model buckling of panels within a cross-section. This report contains descriptions of...

PHATAS Release NOV-2003 and APR-2005 user's manual: program for horizontal axis wind turbine analysis and simulation

The computer program PHATAS, ”Program for Horizontal Axis wind Turbine Analysis and Simulation”, is developed for the time-domain calculation of the dynamic behaviour and the corresponding loads on a Horizontal Axis wind Turbine, HAT. The program PHATAS is available for use as ”console application” on a PC operating under MS-Windows, on a UNIX...

NM3000-LMH46-5 blade design: aerodynamic parameter sensitity study

An investigation is carried out into the LMH46-5 rotor blade geometry that combines a high annual energy capture with relatively low values for the extreme blade root and tower base moments. Within this investigation the load spectrum is calculated for several configurations that have variations in airfoil characteristics, blade chord, blade...