Aerodynamic Performance of Vertical-Axis Wind Turbines
Abstract
:1. Introduction
- I.
- Engineering, empirical technique;
- II.
- Inviscid gas model—The potential and Euler equations;
- III.
- Viscous gas model with averaging turbulent characteristics (RANS equations);
- IV.
- Viscous gas models with unsteady turbulent characteristics (DES, LES, DNS approaches).
- The regularities of the development of the unsteady flow around Darrieus and Savonius rotors with different number of blades have been revealed.
- Qualitative comparisons of the flow pattern around a two- and three-blade Darrieus rotor with experimental data were carried out.
- The dependences of the power coefficient of the VAWT rotors on the Reynolds number, tip-speed ratio, and solidity are determined.
- The influence of the Reynolds number on the dynamic stall from the blades and the Darrieus rotor power coefficient is determined.
- The influence of the solidity and the tip-speed ratio on the power characteristics of the Darrieus rotor is determined.
- The influence of the blades number and Reynolds number on the power characteristics of the Savonius rotor is determined.
2. Methodology
2.1. Mathematical Model
2.2. Turbulence Model
2.3. Boundary Conditions
3. Numerical Setup
3.1. Numerical Algorithm
3.2. Developed CFD Code
- -
- the main task of the specialized package is to simulate the flow field numerically with maximum physical veracity;
- -
- specialization of the package and the efficiency of solving this class of problems;
- -
- no need to buy or rent expensive commercial packages.
4. Results and Discussion
4.1. Darrieus Rotor
- -
- Blade airfoil—NACA 0018;
- -
- Tip-speed ratio—;
- -
- Reynolds number on the rotor diameter—, , ;
- -
- Solidity—, , .
4.2. Savonius Rotor
5. Conclusions
Author Contributions
Funding
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
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Redchyts, D.; Portal-Porras, K.; Tarasov, S.; Moiseienko, S.; Tuchyna, U.; Starun, N.; Fernandez-Gamiz, U. Aerodynamic Performance of Vertical-Axis Wind Turbines. J. Mar. Sci. Eng. 2023, 11, 1367. https://doi.org/10.3390/jmse11071367
Redchyts D, Portal-Porras K, Tarasov S, Moiseienko S, Tuchyna U, Starun N, Fernandez-Gamiz U. Aerodynamic Performance of Vertical-Axis Wind Turbines. Journal of Marine Science and Engineering. 2023; 11(7):1367. https://doi.org/10.3390/jmse11071367
Chicago/Turabian StyleRedchyts, Dmytro, Koldo Portal-Porras, Serhii Tarasov, Svitlana Moiseienko, Uliana Tuchyna, Natalya Starun, and Unai Fernandez-Gamiz. 2023. "Aerodynamic Performance of Vertical-Axis Wind Turbines" Journal of Marine Science and Engineering 11, no. 7: 1367. https://doi.org/10.3390/jmse11071367