Technology

Beyond the limits of aerodynamics

Hyper Wind turbines mount an innovative active flow control (AFC) system that combines suction and blowing on the surface of the blade

Hyper Wind technology uses a system that has zero net mass flow and needs minimal power usage. This system greatly enhances the performance of the airfoils

Modified from [Zha et al.High Performance Airfoil Using Co-Flow Jet Flow Control “, AIAA Journal, 2007] 

The Hyperwind Turbine extracts much more energy from the wind compared to traditional reaching up to 15% NET power.

The AFC makes possible to employ airfoils with greater thickness without compromising aerodynamics. ​ This allows us to increase the size of wind turbines even further.

[Xu  et al – Dynamic Stall Control on the Wind Turbine Airfoi via a Co-Flow Jet – 2016]

Blades with AFC are more resilient to dynamic stall and aerodynamic performances can be variated continuously in operations.

With right tuning AFC can help mitigate tower shadowing loads both in up-wind and down-wind configuration.

By combining blade pitch control and AFC it is possible to expand the operative envelope of the turbine

With the AFC the efficiency of a 2-blades can now compete with a traditional 3-blades turbine, leading to major cost savings in production, transportation and improving the sustainability of the entire industry.

Full-scale CFD simulations confirm it is possible to increase the efficiency of 2-bladed turbines

[Modified from Zha et al – High Efficiency 2-Bladed Utility Wind Turbine Enhanced by CoFlow Jet Active Flow Control – AIAA Journal 2023]

Additional Benefits of the Innovation

Anti-icing
Fail Safe
Lower Noise
Wind Farm Optimization
Dynamic Load Reduction
Lower Thrust Force

Patents

  1. Daniel Guariglia, “Wind Turbine”, EP3924619B1, granted on 27-07-2023 

Publications related to the technology

  1. Yan Ren, Gecheng Zha, Nick Johnson and Ganesh Vijayakumar. “High Efficiency 2-Bladed Utility Wind Turbine Enhanced by CoFlow Jet Active Flow Control,” AIAA 2023-0608. AIAA SCITECH 2023 Forum. January 2023.  
  2. Yan Ren, Kewei Xu, and Gecheng Zha, “Wind Turbine Effciency Enhancement by CoFlow Jet Airfoil”, AIAA Paper 2022-1787, AIAA Scitech Forum, January 3-7, 2022, San Diego, CA & Virtual 
  3. Ma, C. Y., Xu, H. Y. Parameter-Based Design and Analysis of Wind Turbine Airfoils with Conformal Slot Co-Flow Jet. Journal of Applied Fluid Mechanics, 2022; 16(2): 269-283. doi: 10.47176/jafm.16.02.1318 
  4. Zhang, Shunlei, Xudong Yang, and Bifeng Song. 2021. “Numerical Investigation of Performance Enhancement of the S809 Airfoil and Phase VI Wind Turbine Blade Using Co-Flow Jet Technology” Energies 14, no. 21: 6933.  
  5. Kewei Xu and Gecheng Zha, “High efficiency wind turbine using co-flow jet active flow control”, ASME Paper GT2021-59664,ASME Turbo Expo 2021,  June 07-11, 2021, Virtual, Online 
  6. Xiaojing Sun, Yingqiao Xu, Diangui Huang; Numerical simulation and research on improving aerodynamic performance of vertical axis wind turbine by co-flow jet. Journal of Renewable and Sustainable Energy 1 January 2019; 11 (1): 013303. https://doi.org/10.1063/1.5052378 
  7. Yunchao Yang and Gecheng Zha. “Improved Delayed Detached Eddy Simulation of Super-Lift Coefficient of Subsonic Co-Flow Jet Flow Control Airfoil,” AIAA 2018-0314. 2018 AIAA Aerospace Sciences Meeting. January 2018. 
  8. Lefebvre, A. and Dano, B. and Bartow, W. and Di Franzo, M. and Zha, G.-C., “Performance Enhancement and Energy Expenditure of Co-Flow Jet Airfoil with Variation of Mach Number.” AIAA Journal of Aircraft, DOI: 10.2514/1.C033113, June 6, 2016. 
  9. Im, H.-S., Zha, G.-C. and Dano, B., “Large Eddy Simulation of Co-Flow Jet Airfoil at High Angle of Attack”, Journal of Fluids Engineering, vol. 136(2), p. 021101, 2014 
  10. Wang, B.-Y., Haddoukessouni, B., Levy, J. and Zha, G.-C., “Numerical Investigations of Injection Slot Size Effect on the Performance of Co-Flow Jet Airfoil”, AIAA Journal of Aircraft, Vol. 45, No. 6, 2008, pp.2084-2091. 
  11. Zha, G.-C., Bruce F. Carroll, Paxton, C., Clark A. Conley and Adam Wells , “High Performance Airfoil Using Co-Flow Jet Flow Control “, AIAA Journal, Vol. 45, No. 8, pp.2087-2090, 2007. 
  12. Zha, G.-C. and Paxton, C. “A Novel Flow Control Method for Airfoil Performance Enhancement Using Co-Flow Jet”, Applications of Circulation Control Technologies, AIAA Book Series, Progress in Aeronautics and Astronautics, Vol. 214, 2006, Chapter 10, p. 293-314, Editors: R. D. Joslin and G. S. Jones
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