The new type of shrouded wind turbine called “wind-lens turbine” has been developed. The wind-lens turbine has a brimmed diffuser called “wind-lens”, by which the wind concentration on the turbine blade and the significant enhancement of the turbine output can be achieved. A simultaneous optimization method for the aerodynamic design of rotor blade and wind-lens has been developed. The present optimal design method is based on a genetic algorithm (GA) which enables multi objective aerodynamic optimization. In the present study, aerodynamic performances and flow fields of the Pareto optimal solutions of wind-lens turbines designed by the present optimal design method have been investigated by wind-tunnel tests and three-dimensional Reynolds averaged Navier-Stokes (RANS) analyses. Output power coefficients obtained from the wind-tunnel tests in the optimal wind-lens turbine exceeded the Betz limit, which is the performance limitation for bare wind turbines. The numerical results and the experimental results show that the suppression of flow separations in the diffuser is important to achieve significant improvement in aerodynamic performances. As a result, it is found that the aerodynamic performance of wind-lens turbine is significantly affected by the interrelationship between the internal and external flow fields around the wind-lens.
Skip Nav Destination
ASME Turbo Expo 2015: Turbine Technical Conference and Exposition
June 15–19, 2015
Montreal, Quebec, Canada
Conference Sponsors:
- International Gas Turbine Institute
ISBN:
978-0-7918-5680-2
PROCEEDINGS PAPER
Aerodynamic Performances and Flow Fields of Pareto Optimal Solutions in an Aerodynamic Design of a Wind-Lens Turbine
Nobuhito Oka,
Nobuhito Oka
Kyushu University, Fukuoka, Japan
Search for other works by this author on:
Masato Furukawa,
Masato Furukawa
Kyushu University, Fukuoka, Japan
Search for other works by this author on:
Kazutoyo Yamada,
Kazutoyo Yamada
Kyushu University, Fukuoka, Japan
Search for other works by this author on:
Akihiro Oka,
Akihiro Oka
Kyushu University, Fukuoka, Japan
Search for other works by this author on:
Yasushi Kurokawa
Yasushi Kurokawa
Kyushu University, Fukuoka, Japan
Search for other works by this author on:
Nobuhito Oka
Kyushu University, Fukuoka, Japan
Masato Furukawa
Kyushu University, Fukuoka, Japan
Kazutoyo Yamada
Kyushu University, Fukuoka, Japan
Akihiro Oka
Kyushu University, Fukuoka, Japan
Yasushi Kurokawa
Kyushu University, Fukuoka, Japan
Paper No:
GT2015-43619, V009T46A022; 11 pages
Published Online:
August 12, 2015
Citation
Oka, N, Furukawa, M, Yamada, K, Oka, A, & Kurokawa, Y. "Aerodynamic Performances and Flow Fields of Pareto Optimal Solutions in an Aerodynamic Design of a Wind-Lens Turbine." Proceedings of the ASME Turbo Expo 2015: Turbine Technical Conference and Exposition. Volume 9: Oil and Gas Applications; Supercritical CO2 Power Cycles; Wind Energy. Montreal, Quebec, Canada. June 15–19, 2015. V009T46A022. ASME. https://doi.org/10.1115/GT2015-43619
Download citation file:
19
Views
0
Citations
Related Proceedings Papers
Related Articles
A New Approach Toward Power Output Enhancement Using Multirotor Systems With Shrouded Wind Turbines
J. Energy Resour. Technol (May,2019)
Multirotor Systems Using Three Shrouded Wind Turbines for Power Output Increase
J. Energy Resour. Technol (May,2019)
Rotor Configuration Effects on the Performance of a HAWT With Tip-Mounted Mie-Type Vanes
J. Sol. Energy Eng (November,2003)
Related Chapters
Outlook
Closed-Cycle Gas Turbines: Operating Experience and Future Potential
Introduction
Turbine Aerodynamics: Axial-Flow and Radial-Flow Turbine Design and Analysis
An Approach for System Development Using Evolutionary Probabilistic Strategy and Grammar Rules
Intelligent Engineering Systems through Artificial Neural Networks, Volume 16