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Optimizing duct geometry for micro-scale VAWTs: Exploring aerodynamics and aeroacoustics with URANS and DDES models

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  • Rahmatian, Mohammad Ali
  • Khaksar, Saba
  • Tari, Pooyan Hashemi
  • Karbasian, Hamid Reza

Abstract

Among several advantages of the Vertical Axis Wind Turbines (VAWTs), such as the low cut-in speed, these turbines have lower efficiency compared to Horizontal Axis Wind Turbines (HAWTs). In order to increase the power of VAWTs, a novel approach is employed to address the aforementioned issue. In this study, a convergent-divergent duct (including three components: nozzle, diffuser, and flange) is used, and in the first step of this study, the angles and lengths of all duct components and throat width are optimized (in 3D configuration). In the optimization process, first, the design points are determined by the Design of Experiment (DOE) method, and for each design point, the flow field inside the duct is modeled by the Reynolds-Averaged Navier-Stokes (RANS) approach. Moreover, the objective function of this optimization problem is to maximize the velocity of the flow inside the duct. In the following, the general treatment of the statistical population is forecasted using the Response Surface Method (RSM), and the optimal duct is obtained using the Genetic Algorithm (GA). It is observed that the optimal duct increases the local wind speed up to 1.99 times (from 5 m/s to 9.94 m/s at the throat). Furthermore, a sensitivity analysis was performed on the duct components, which are the most effective parameters in increasing wind speed, nozzle angle, and nozzle length. In the second step, a Darrieus VAWT (with both 2D and 3D configurations) is numerically validated, and then this turbine is scaled-down and located in the optimal duct. The position and tip-clearance of a turbine within the optimal duct are investigated to find the best configuration for higher power generation. Subsequently, both the bare wind turbine and the ducted wind turbine undergo thorough aerodynamic and aeroacoustic analysis, using unsteady RANS and Delayed Detached Eddy Simulations (DDES) approaches, respectively. The results reveal a remarkable improvement in the aerodynamic efficiency (power coefficient increased up to 2.5 times) with the addition of the optimal duct, while the aeroacoustic performance of the system is compromised, leading to an increase in sound pressure level.

Suggested Citation

  • Rahmatian, Mohammad Ali & Khaksar, Saba & Tari, Pooyan Hashemi & Karbasian, Hamid Reza, 2024. "Optimizing duct geometry for micro-scale VAWTs: Exploring aerodynamics and aeroacoustics with URANS and DDES models," Energy, Elsevier, vol. 313(C).
    • Handle: RePEc:eee:energy:v:313:y:2024:i:c:s0360544224038210
    DOI: 10.1016/j.energy.2024.134043
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    1. Allaei, Daryoush & Tarnowski, David & Andreopoulos, Yiannis, 2015. "INVELOX with multiple wind turbine generator systems," Energy, Elsevier, vol. 93(P1), pages 1030-1040.
    2. Li, Qing'an & Maeda, Takao & Kamada, Yasunari & Murata, Junsuke & Yamamoto, Masayuki & Ogasawara, Tatsuhiko & Shimizu, Kento & Kogaki, Tetsuya, 2016. "Study on power performance for straight-bladed vertical axis wind turbine by field and wind tunnel test," Renewable Energy, Elsevier, vol. 90(C), pages 291-300.
    3. Make, Michel & Vaz, Guilherme, 2015. "Analyzing scaling effects on offshore wind turbines using CFD," Renewable Energy, Elsevier, vol. 83(C), pages 1326-1340.
    4. Pourfattah, Farzad & Sabzpooshani, Majid, 2021. "On the thermal management of a power electronics system: Optimization of the cooling system using genetic algorithm and response surface method," Energy, Elsevier, vol. 232(C).
    5. Elkhoury, M. & Kiwata, T. & Nagao, K. & Kono, T. & ElHajj, F., 2018. "Wind tunnel experiments and Delayed Detached Eddy Simulation of a three-bladed micro vertical axis wind turbine," Renewable Energy, Elsevier, vol. 129(PA), pages 63-74.
    6. Su, Jie & Lei, Hang & Zhou, Dai & Han, Zhaolong & Bao, Yan & Zhu, Hongbo & Zhou, Lei, 2019. "Aerodynamic noise assessment for a vertical axis wind turbine using Improved Delayed Detached Eddy Simulation," Renewable Energy, Elsevier, vol. 141(C), pages 559-569.
    7. Mauro, S. & Brusca, S. & Lanzafame, R. & Messina, M., 2019. "CFD modeling of a ducted Savonius wind turbine for the evaluation of the blockage effects on rotor performance," Renewable Energy, Elsevier, vol. 141(C), pages 28-39.
    8. Radun, Jenni & Maula, Henna & Saarinen, Pekka & Keränen, Jukka & Alakoivu, Reijo & Hongisto, Valtteri, 2022. "Health effects of wind turbine noise and road traffic noise on people living near wind turbines," Renewable and Sustainable Energy Reviews, Elsevier, vol. 157(C).
    9. Kardous, M. & Chaker, R. & Aloui, F. & Nasrallah, S. Ben, 2013. "On the dependence of an empty flanged diffuser performance on flange height: Numerical simulations and PIV visualizations," Renewable Energy, Elsevier, vol. 56(C), pages 123-128.
    10. Danao, Louis Angelo & Eboibi, Okeoghene & Howell, Robert, 2013. "An experimental investigation into the influence of unsteady wind on the performance of a vertical axis wind turbine," Applied Energy, Elsevier, vol. 107(C), pages 403-411.
    11. Hashem, I. & Mohamed, M.H., 2018. "Aerodynamic performance enhancements of H-rotor Darrieus wind turbine," Energy, Elsevier, vol. 142(C), pages 531-545.
    12. Dessoky, Amgad & Bangga, Galih & Lutz, Thorsten & Krämer, Ewald, 2019. "Aerodynamic and aeroacoustic performance assessment of H-rotor darrieus VAWT equipped with wind-lens technology," Energy, Elsevier, vol. 175(C), pages 76-97.
    13. Karbasian, Hamid Reza & Esfahani, Javad Abolfazli & Aliyu, Aliyu Musa & Kim, Kyung Chun, 2022. "Numerical analysis of wind turbines blade in deep dynamic stall," Renewable Energy, Elsevier, vol. 197(C), pages 1094-1105.
    14. Li, Shoutu & Chen, Qin & Li, Ye & Pröbsting, Stefan & Yang, Congxin & Zheng, Xiaobo & Yang, Yannian & Zhu, Weijun & Shen, Wenzhong & Wu, Faming & Li, Deshun & Wang, Tongguang & Ke, Shitang, 2022. "Experimental investigation on noise characteristics of small scale vertical axis wind turbines in urban environments," Renewable Energy, Elsevier, vol. 200(C), pages 970-982.
    15. Li, Siyi & Zhang, Mingrui & Piggott, Matthew D., 2023. "End-to-end wind turbine wake modelling with deep graph representation learning," Applied Energy, Elsevier, vol. 339(C).
    16. Ye, Jianjun & Cheng, Yanglin & Xie, Junlong & Huang, Xiaohong & Zhang, Yuan & Hu, Siyao & Salem, Shehab & Wu, Jiejun, 2020. "Effects of divergent angle on the flow behaviors in low speed wind accelerating ducts," Renewable Energy, Elsevier, vol. 152(C), pages 1292-1301.
    17. Kim, Sanghyeon & Cheong, Cheolung, 2015. "Development of low-noise drag-type vertical wind turbines," Renewable Energy, Elsevier, vol. 79(C), pages 199-208.
    18. Raciti Castelli, Marco & Englaro, Alessandro & Benini, Ernesto, 2011. "The Darrieus wind turbine: Proposal for a new performance prediction model based on CFD," Energy, Elsevier, vol. 36(8), pages 4919-4934.
    19. Hosseini, S. Rasoul & Ganji, Davoud Domiri, 2020. "A novel design of nozzle-diffuser to enhance performance of INVELOX wind turbine," Energy, Elsevier, vol. 198(C).
    20. Avallone, Francesco & Ragni, Daniele & Casalino, Damiano, 2020. "On the effect of the tip-clearance ratio on the aeroacoustics of a diffuser-augmented wind turbine," Renewable Energy, Elsevier, vol. 152(C), pages 1317-1327.
    21. Wang, Wen-Xue & Matsubara, Terutake & Hu, Junfeng & Odahara, Satoru & Nagai, Tomoyuki & Karasutani, Takashi & Ohya, Yuji, 2015. "Experimental investigation into the influence of the flanged diffuser on the dynamic behavior of CFRP blade of a shrouded wind turbine," Renewable Energy, Elsevier, vol. 78(C), pages 386-397.
    22. Hashem, I. & Mohamed, M.H. & Hafiz, A.A., 2017. "Aero-acoustics noise assessment for Wind-Lens turbine," Energy, Elsevier, vol. 118(C), pages 345-368.
    23. Mohamed, M.H., 2012. "Performance investigation of H-rotor Darrieus turbine with new airfoil shapes," Energy, Elsevier, vol. 47(1), pages 522-530.
    24. Mohammad Hassan Ranjbar & Behnam Rafiei & Seyyed Abolfazl Nasrazadani & Kobra Gharali & Madjid Soltani & Armughan Al-Haq & Jatin Nathwani, 2021. "Power Enhancement of a Vertical Axis Wind Turbine Equipped with an Improved Duct," Energies, MDPI, vol. 14(18), pages 1-16, September.
    25. Rahmatian, Mohammad Ali & Nazarian Shahrbabaki, Amin & Moeini, Seyed Peyman, 2023. "Single-objective optimization design of convergent-divergent ducts of ducted wind turbine using RSM and GA, to increase power coefficient of a small-scale horizontal axis wind turbine," Energy, Elsevier, vol. 269(C).
    26. Li, Jian & Liu, Ranhui & Yuan, Peng & Pei, Yanli & Cao, Renjing & Wang, Gang, 2020. "Numerical simulation and application of noise for high-power wind turbines with double blades based on large eddy simulation model," Renewable Energy, Elsevier, vol. 146(C), pages 1682-1690.
    27. Rahmatian, Mohammad Ali & Hashemi Tari, Pooyan & Mojaddam, Mohammad & Majidi, Sahand, 2022. "Numerical and experimental study of the ducted diffuser effect on improving the aerodynamic performance of a micro horizontal axis wind turbine," Energy, Elsevier, vol. 245(C).
    28. Rahmatian, Mohammad Ali & Hashemi Tari, Pooyan & Majidi, Sahand & Mojaddam, Mohammad, 2023. "Experimental study of the effect of the duct on dual co-axial horizontal axis wind turbines and the effect of rotors diameter ratio and distance on increasing power coefficient," Energy, Elsevier, vol. 284(C).
    29. Balduzzi, Francesco & Bianchini, Alessandro & Carnevale, Ennio Antonio & Ferrari, Lorenzo & Magnani, Sandro, 2012. "Feasibility analysis of a Darrieus vertical-axis wind turbine installation in the rooftop of a building," Applied Energy, Elsevier, vol. 97(C), pages 921-929.
    30. Khamlaj, Tariq Abdulsalam & Rumpfkeil, Markus Peer, 2018. "Analysis and optimization of ducted wind turbines," Energy, Elsevier, vol. 162(C), pages 1234-1252.
    31. Teff-Seker, Y. & Berger-Tal, O. & Lehnardt, Y. & Teschner, N., 2022. "Noise pollution from wind turbines and its effects on wildlife: A cross-national analysis of current policies and planning regulations," Renewable and Sustainable Energy Reviews, Elsevier, vol. 168(C).
    32. Ghasemian, Masoud & Nejat, Amir, 2015. "Aero-acoustics prediction of a vertical axis wind turbine using Large Eddy Simulation and acoustic analogy," Energy, Elsevier, vol. 88(C), pages 711-717.
    33. Mohamed, M.H., 2013. "Impacts of solidity and hybrid system in small wind turbines performance," Energy, Elsevier, vol. 57(C), pages 495-504.
    34. Leloudas, Stavros N. & Lygidakis, Georgios N. & Eskantar, Alexandros I. & Nikolos, Ioannis K., 2020. "A robust methodology for the design optimization of diffuser augmented wind turbine shrouds," Renewable Energy, Elsevier, vol. 150(C), pages 722-742.
    35. Bontempo, R. & Manna, M., 2020. "Diffuser augmented wind turbines: Review and assessment of theoretical models," Applied Energy, Elsevier, vol. 280(C).
    36. Koichi Watanabe & Shuhei Takahashi & Yuji Ohya, 2016. "Application of a Diffuser Structure to Vertical-Axis Wind Turbines," Energies, MDPI, vol. 9(6), pages 1-14, May.
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