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Experimental and Computational Investigation on Gyromill Wind Turbines Focusing on Wing Camber

[+] Author Affiliations
Eiji Ejiri, Tomoya Iwadate

Chiba Institute of Technology, Narashino City, Japan

Paper No. AJKFluids2015-28401, pp. V01AT28A001; 6 pages
  • ASME/JSME/KSME 2015 Joint Fluids Engineering Conference
  • Volume 1A: Symposia, Part 2
  • Seoul, South Korea, July 26–31, 2015
  • Conference Sponsors: Fluids Engineering Division
  • ISBN: 978-0-7918-5732-8
  • Copyright © 2015 by JSME


Gyromill wind turbines with three different blade profiles were investigated experimentally and numerically in order to verify the effect of the direction of camber on aerodynamic performance.

Experiments were carried out using a model turbine impeller with an axial length of 200 mm and a diameter of 200 mm. The results showed that the maximum power coefficient was higher for blades with negative camber than for ones with positive camber. On the other hand, the operating range of the tip speed ratio tended to be narrower for the blades with negative camber than for the ones with positive camber.

An unsteady numerical flow analysis around the wind turbines was conducted using a commercial code employing the finite volume method. The results showed that the power coefficient of one blade had a maximum value in the second quadrant and that the blades with negative camber were advantageous for obtaining high rotational force in the position, compared with the blades with positive camber and a symmetrical blade.

Copyright © 2015 by JSME
Topics: Wind turbines , Wings



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