scholarly journals Effect of Surface Roughness on Wind Turbine Performance.

2017 ◽  
Author(s):  
Robert S. Ehrmann ◽  
Benjamin Wilcox ◽  
Edward B. White ◽  
David Charles Maniaci
Keyword(s):  
Surface Roughness ◽  
Wind Turbine ◽  
Turbine Performance ◽  
Effect Of Surface

scholarly journals Experimental investigation of Surface Roughness effects and Transition on Wind Turbine performance

2018 ◽  
Vol 1037 ◽  
pp. 052018 ◽  
Author(s):  
O Pires ◽  
X Munduate ◽  
K Boorsma ◽  
O Ceyhan Yilmaz ◽  
H Aa Madsen ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Experimental Investigation ◽  
Wind Turbine ◽  
Roughness Effects ◽  
Turbine Performance

The effect of surface roughness on AES depth profile.

Shinku ◽  
1987 ◽  
Vol 30 (10) ◽  
pp. 793-798 ◽  
Author(s):  
Masao HIRASAKA ◽  
Masao HASHIBA ◽  
Toshiroh YAMASHINA
Keyword(s):  
Surface Roughness ◽  
Depth Profile ◽  
Effect Of Surface

scholarly journals Performance assessment and optimization of a helical Savonius wind turbine by modifying the Bach’s section

2021 ◽  
Vol 3 (8) ◽  
Author(s):  
M. Niyat Zadeh ◽  
M. Pourfallah ◽  
S. Safari Sabet ◽  
M. Gholinia ◽  
S. Mouloodi ◽  
...  
Keyword(s):  
Wind Turbine ◽  
Performance Assessment ◽  
Turbulent Flows ◽  
Power Coefficient ◽  
Speed Ratio ◽  
Tip Speed Ratio ◽  
Basic Model ◽  
Turbine Performance ◽  
Primary Model ◽  
Savonius Wind Turbine

AbstractIn this paper, we attempted to measure the effect of Bach’s section, which presents a high-power coefficient in the standard Savonius model, on the performance of the helical Savonius wind turbine, by observing the parameters affecting turbine performance. Assessment methods based on the tip speed ratio, torque variation, flow field characterizations, and the power coefficient are performed. The present issue was stimulated using the turbulence model SST (k- ω) at 6, 8, and 10 m/s wind flow velocities via COMSOL software. Numerical simulation was validated employing previous articles. Outputs demonstrate that Bach-primary and Bach-developed wind turbine models have less flow separation at the spoke-end than the simple helical Savonius model, ultimately improving wind turbines’ total performance and reducing spoke-dynamic loads. Compared with the basic model, the Bach-developed model shows an 18.3% performance improvement in the maximum power coefficient. Bach’s primary model also offers a 12.4% increase in power production than the initial model’s best performance. Furthermore, the results indicate that changing the geometric parameters of the Bach model at high velocities (in turbulent flows) does not significantly affect improving performance.

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