Measurements of the Aerodynamic Normal Forces on a 12-kW Straight-Bladed Vertical Axis Wind Turbine
Abstract
:1. Introduction
2. Theory
3. Experimental Setup
3.1. Data Extraction
4. Results and Discussion
4.1. Measurement Accuracy
4.2. Normal Force Coefficient
Conditions | λ | ||||
---|---|---|---|---|---|
Steady, Figure 6 | 3.71 ± 0.20 | 65.07 | ±4.0 | ±3.0 | 1.2385 |
Unsteady, Figure 7 | 3.61 ± 0.14 | 89.13 | ±3.6 | ±2.5 | 1.2469 |
65 rpm, Figure 8 | 3.06 ± 0.14 | 65.36 | ±2.4 | ±1.7 | 1.2367 |
3.87 ± 0.22 | 65.98 | ±4.1 | ±3.0 | 1.2447 | |
4.57 ± 0.30 | 65.35 | ±5.7 | ±4.2 | 1.2479 | |
50 rpm, Figure 9 | 2.55 ± 0.13 | 49.89 | ±2.0 | ±1.5 | 1.2535 |
3.04 ± 0.18 | 49.74 | ±3.2 | ±2.5 | 1.2748 | |
3.88 ± 0.28 | 49.57 | ±5.3 | ±4.2 | 1.2761 | |
40 rpm, Figure 10 | 1.66 ± 0.07 | 39.97 | ±1.2 | ±1.0 | 1.2533 |
1.84 ± 0.08 | 40.29 | ±1.5 | ±1.2 | 1.2533 |
4.3. General Comments
5. Conclusions
Acknowledgments
Author Contributions
Conflicts of Interest
References
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Dyachuk, E.; Rossander, M.; Goude, A.; Bernhoff, H. Measurements of the Aerodynamic Normal Forces on a 12-kW Straight-Bladed Vertical Axis Wind Turbine. Energies 2015, 8, 8482-8496. https://doi.org/10.3390/en8088482
Dyachuk E, Rossander M, Goude A, Bernhoff H. Measurements of the Aerodynamic Normal Forces on a 12-kW Straight-Bladed Vertical Axis Wind Turbine. Energies. 2015; 8(8):8482-8496. https://doi.org/10.3390/en8088482
Chicago/Turabian StyleDyachuk, Eduard, Morgan Rossander, Anders Goude, and Hans Bernhoff. 2015. "Measurements of the Aerodynamic Normal Forces on a 12-kW Straight-Bladed Vertical Axis Wind Turbine" Energies 8, no. 8: 8482-8496. https://doi.org/10.3390/en8088482