Aerodynamic design for wind-lens turbine using optimization technique

Nobuhito Oka, Masato Furukawa, Kazutoyo Yamada, Kota Kido

Research output: Chapter in Book/Report/Conference proceedingConference contribution

10 Citations (Scopus)


An optimum aerodynamic design method has been developed for the new type of wind turbine called "wind-lens turbine". The wind-lens turbine has a diffuser with brim called "wind-lens", by which the wind concentration on the turbine rotor and the significant enhancement of the turbine output can be achieved. The present design method is based on a genetic algorithm (GA) and a quasi-three-dimensional design of turbine rotor. The quasi-three-dimensional design consists of two parts: meridional viscous flow calculation and two-dimensional blade element design. In the meridional viscous flow calculation, an axisymmetric viscous flow is numerically analyzed on a meridional plane to determine the wind flow rate through the wind-lens and the spanwise distribution of the rotor inlet flow. In the two-dimensional rotor blade element design, the turbine rotor blade profile is determined by a one-dimensional through flow modeling for the wind-lens turbine and a two-dimensional blade element theory based on the momentum theorem of the ducted turbine. In the present optimization method, the Non-dominated Sorting Genetic Algorithm II (NSGA-II) is used as evaluation and selection model. The Real-coded Ensemble Crossover (REX) is used as crossover model. The present aerodynamic design method has been applied to the coupled design of turbine rotor and wind-lens. Total performances and flow fields of the wind-lens turbines designed have been investigated by Reynolds averaged Navier-Stokes simulations, in order to verify the present design method.

Original languageEnglish
Title of host publicationASME 2013 Fluids Engineering Division Summer Meeting, FEDSM 2013
Publication statusPublished - Dec 1 2013
EventASME 2013 Fluids Engineering Division Summer Meeting, FEDSM 2013 - Incline Village, NV, United States
Duration: Jul 7 2013Jul 11 2013

Publication series

NameAmerican Society of Mechanical Engineers, Fluids Engineering Division (Publication) FEDSM
Volume1 A
ISSN (Print)0888-8116


OtherASME 2013 Fluids Engineering Division Summer Meeting, FEDSM 2013
Country/TerritoryUnited States
CityIncline Village, NV

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering


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