Research on the Hydrodynamic Performance of a Horizontal-Axis Tidal Current Turbine with Symmetrical Airfoil Blades Based on Swept-Back Models
Abstract
:1. Introduction
2. Backward Swept Blade Design
2.1. Initial Model
2.2. Swept Model
2.3. 3D Model
3. Numerical Simulation
3.1. Meshing
3.2. Mesh Independence Analysis
3.3. Calculation and Post-Processing
4. Analysis of Simulation Results
4.1. Starting Torque
4.2. Energy Efficiency Analysis
4.3. Load Analysis
5. Experimental Verification
6. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Spanwise Position (r/R) | Radius r/mm | Chord Length c/mm | Airfoils |
---|---|---|---|
0.09 | 14.94 | − | − |
0.15 | 24.90 | − | circle with radius 10 |
0.20 | 33.20 | 33.44 | NACA0030 |
0.27 | 44.82 | 45.54 | NACA0018 |
0.35 | 58.10 | 43.51 | NACA0018 |
0.40 | 66.40 | 41.49 | NACA0015 |
0.47 | 78.02 | 39.46 | NACA0015 |
0.53 | 87.98 | 37.44 | NACA0015 |
0.60 | 99.60 | 35.42 | NACA0015 |
0.66 | 109.56 | 33.39 | NACA0015 |
0.73 | 121.18 | 31.37 | NACA0012 |
0.79 | 131.14 | 29.34 | NACA0012 |
0.86 | 142.76 | 27.32 | NACA0012 |
0.93 | 154.38 | 25.30 | NACA0012 |
1 | 166.00 | 23.32 | NACA0012 |
Model Type | Offset Equation |
---|---|
1 | (Kaya 2018) |
2 | (Hansen 2011) |
3 | (Larwood 2014) |
Spanwise Position (r/R) | Offset/mm | ||
---|---|---|---|
Model 1 | Model 2 | Model 3 | |
0.09 | 0 | 0 | 0 |
0.15 | 0 | 0 | 0 |
0.20 | 0 | 0 | 0 |
0.27 | 0 | 0 | 0 |
0.35 | 0 | 0.00100 | 0 |
0.40 | 0.649622 | 0.50880 | 0.0982 |
0.47 | 1.843385 | 1.43280 | 0.5657 |
0.53 | 3.082826 | 2.42280 | 1.2729 |
0.60 | 4.728119 | 3.80880 | 2.4556 |
0.66 | 6.277070 | 5.19470 | 3.7757 |
0.73 | 8.214997 | 7.04260 | 5.6734 |
0.79 | 9.968596 | 8.82440 | 7.6065 |
0.86 | 12.10352 | 11.1342 | 10.2193 |
0.93 | 14.31841 | 13.6927 | 13.2171 |
1 | 16.60000 | 16.6000 | 16.6000 |
Scheme | Number of Nodes | Total Number of Grids | Power Coefficient |
---|---|---|---|
1 | 497,198 | 2,068,095 | 0.2527 |
2 | 659,907 | 3,060,727 | 0.2537 |
3 | 889,314 | 4,972,207 | 0.2486 |
4 | 1,000,141 | 5,035,295 | 0.2898 |
5 | 1,639,727 | 7,848,863 | 0.2899 |
Velocity(m/s) | Starting Torque/N.m | ||
---|---|---|---|
Model 1 | Model 2 | Model 3 | |
0.2 | 0.0055851 | 0.0056708 (+1.53%) | 0.0055949 (+0.18%) |
0.3 | 0.0126293 | 0.0126649 (+0.28%) | 0.0126492 (+0.16%) |
0.4 | 0.0225441 | 0.0226049 (+0.27%) | 0.0225837 (+0.18%) |
0.5 | 0.0353502 | 0.0354231 (+0.21%) | 0.0354115 (+0.17%) |
TSR | Power Coefficient | ||
---|---|---|---|
Model 1 | Model 2 | Model 3 | |
2 | 0.05498 | 0.05424 (−1.35%) | 0.05341 (−2.86%) |
3 | 0.16236 | 0.15923 (−1.93%) | 0.16284 (+0.3%) |
4 | 0.2527 | 0.25514 (+0.96%) | 0.25534 (+1.00%) |
5 | 0.21838 | 0.22091 (+1.20%) | 0.22151 (+1.40%) |
6 | 0.10393 | 0.10739 (+3.22%) | 0.1096 (+5.17%) |
TSR | Thrust Coefficient | ||
---|---|---|---|
Model 1 | Model 2 | Model 3 | |
2 | 0.43441 | 0.43453 (+0.03%) | 0.43299 (−0.33%) |
3 | 0.64484 | 0.63774 (−1.1%) | 0.64689 (+0.32%) |
4 | 0.73239 | 0.73574 (+0.457%) | 0.73575 (+0.459%) |
5 | 0.75227 | 0.75575 (+0.46%) | 0.75702 (+0.63%) |
6 | 0.72829 | 0.73242 (+0.57%) | 0.73610 (+1.07%) |
7 | 0.68359 | 0.69225 (+1.27%) | 0.69507 (+1.68%) |
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Yan, Y.-T.; Xu, S.-M.; Liu, C.; Zhang, X.; Chen, J.-M.; Zhang, X.-M.; Dong, Y.-J. Research on the Hydrodynamic Performance of a Horizontal-Axis Tidal Current Turbine with Symmetrical Airfoil Blades Based on Swept-Back Models. J. Mar. Sci. Eng. 2022, 10, 1515. https://doi.org/10.3390/jmse10101515
Yan Y-T, Xu S-M, Liu C, Zhang X, Chen J-M, Zhang X-M, Dong Y-J. Research on the Hydrodynamic Performance of a Horizontal-Axis Tidal Current Turbine with Symmetrical Airfoil Blades Based on Swept-Back Models. Journal of Marine Science and Engineering. 2022; 10(10):1515. https://doi.org/10.3390/jmse10101515
Chicago/Turabian StyleYan, Yu-Ting, Shi-Ming Xu, Cong Liu, Xiao Zhang, Jian-Mei Chen, Xue-Ming Zhang, and Yong-Jun Dong. 2022. "Research on the Hydrodynamic Performance of a Horizontal-Axis Tidal Current Turbine with Symmetrical Airfoil Blades Based on Swept-Back Models" Journal of Marine Science and Engineering 10, no. 10: 1515. https://doi.org/10.3390/jmse10101515