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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License
Article
Author(s)
Nobuhiro Murakami1, Hiroaki Hasegawa2, Toshihiro Haniu1 and Masahide Nakamura1
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DOI:10.17265/1934-8975/2016.01.003
Affiliation(s)
1. Dept. of Mechanical Engineering Tegatagakuen-machi 1-1, Graduate School of Engineering & Resource Science, Akita Univ., Akita 010-8502, Japan
2. Dept. of Mechanical and Intelligent Engineering Yoto, Graduate School of Engineering, Utsunomiya Univ., Utsunomiya-shi 7-1-2, Japan
ABSTRACT
Spiral Magnus is a unique wind turbine system that rotates with
cylinders which have spiral-shaped fins coiled around them (instead of using
the more common propeller-type blades). In the present study, three models
(cylinder with no fins, cylinder with straight fins and cylinder with spiral
fins) were installed, and fluid force measurements were performed by a strain
gauge force balance. A PIV (particle image velocimetry) system was used to
better understand the flow fields around the cylinder. Considering the results of the experiment, it
was confirmed that, the aerodynamic
performance of the rotating cylinder can be improved by the fin. However, the
straight fin makes the flow close to the cylinder surface ineffective. The
rotary cylinder with the spiral fins
was able to generate the greatest lift among
three models, because the spiral fin effectively influences the vicinity of the
cylinder surface.
KEYWORDS
Wind turbine, Magnus effect, wind tunnel test, spiral Magnus.
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