Wind Energy Projects

DARcorporation was involved in the aerodynamic design, structural design and prototype testing of the Hi-Q wind turbine which is an unconventional horizontal axis wind turbine. Blade Element Momentum (BEM) methods were adopted to analyze the design, methods were programmed and an in-house code was developed to analyze the performance of the wind turbine. A series of case studies was conducted with varying geometric parameters of the wind turbine. The performance in each case was carefully studied and the turbine design was optimized. Computational Fluid Dynamics (CFD) cases were simulated to verify the BEM code developed. There was good correlation between the results of the BEM code and CFD. Separate CFD cases were analyzed to extract the loads acting on the blades. These loads were used in the structural analysis of the blades. Finite Element models were created in Femap to analyze the wind turbine blades. NEi Nastran was used to analyze the models. Layup schedules for the composite blades were determined based on the loads extracted from the CFD simulations. The wind turbine blades were fabricated, using carbon fiber layup schedules based on the Finite Element analysis.




DARcorporation was involved in the aerodynamic and structural design and prototype testing of the SkyDrill Power Systems Vertical Axis Wind Turbine (VAWT). Because a VAWT is designed to turn at much lower rpms, they will produce energy at lower wind speeds and are more acceptable for urban areas where noise pollution is a concern. Two-Dimensional Computational Fluid Dynamics (CFD) analysis was conducted on various blade profiles to see which profile yielded a better performance. After the blade profile analysis, a series of Three-Dimensional CFD cases were analyzed and studied. The performance parameters were extracted from the results of these CFD cases. Finite Element models were created with load cases from CFD analysis. Normal modes and frequency response of the structure was analyzed using NEi Nastran and Femap.




DARcorporation engineers were involved with the aerodynamic and structural design of the Wind Energy Corporation Windy II Vertical Axis Wind Turbine (VAWT). Two-Dimensional Computational Fluid Dynamics (CFD) trade studies were conducted to see the effect of number of blades and the profile of the blades. Three-Dimensional CFD cases followed the Two-Dimensional CFD analyses. The performance characteristics were extracted from the Three-Dimensional CFD runs. DARcorporation engineers tested a scaled model of the wind turbine in the wind tunnel at the University of Kansas. The results were post processed and scaled up to the full scale. DARcorporation engineers were also involved with the structural analysis of the wind turbine. A Finite Element model was created and various load cases were analyzed. Layup schedules were determined based on the results from these simulations. Normal modes and frequency response of the wind turbine along with the tower was analyzed using NEi Nastran and Femap.




DARcorporation was involved in the aerodynamic and Structural Design and Analysis of the Chance Morgan Windwheel™, which is Patent Pending. Finite Element Analysis (FEA) was performed to show the maximum deflection of the Windwheel. Several structural trade studies were carried out to meet the IEC standards. The aerodynamic loads were obtained by Blade Element Momentum (BEM) methods and IEC standards were used to generate the structural load cases.



Other Design & Analysis Projects Include: