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Method of C groove on vortex suppression and energy performance improvement for a NACA0009 hydrofoil with tip clearance in tidal energy

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  • Liu, Yabin
  • Tan, Lei

Abstract

Tidal energy induced by the gravitation between the earth and moon is the most widespread energy with great development potential by hydraulic machineries. Tip leakage vortex (TLV) has significant influence on the flow pattern and energy performance of hydraulic machineries. In the present work, a C groove method is proposed to suppress the TLV and improve the energy performance of a NACA0009 hydrofoil in tidal energy conversion. The numerical approach with mesh generation and Navior-Stokes equation solution is employed to evaluate the effect of C groove. The geometric and flow parameters including groove width, groove edge rotation, groove position, tip clearance size, and inlet velocity are systematically investigated. The function of the C groove is to suppress the primary TLV by groove jet impingement and weaken the secondary TLV by groove breaking flow, and then improve the flow pattern resulting in a higher energy performance. Results show that the C groove can suppress the vortex area under all conditions, and the maximum decrease of vortex area is 66.55% and 67.94% under tip clearance of 0.2 and 0.4, respectively. The C groove can improve the lift drag ratio of foil under all conditions, and the maximum increase of lift drag ratio is 2.79% and 2.10% under tip clearance of 0.2 and 0.4, respectively. With the C groove, newborn vortexes are induced, which can be classified into three types: newborn groove vortex (NGV) in groove, newborn primary TLV (NPTLV) above suction side downstream groove, and newborn secondary TLV (NSTLV) in tip clearance downstream groove.

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  • Liu, Yabin & Tan, Lei, 2018. "Method of C groove on vortex suppression and energy performance improvement for a NACA0009 hydrofoil with tip clearance in tidal energy," Energy, Elsevier, vol. 155(C), pages 448-461.
    • Handle: RePEc:eee:energy:v:155:y:2018:i:c:p:448-461
    DOI: 10.1016/j.energy.2018.04.174
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    References listed on IDEAS

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    Cited by:

    1. Zhenwei Huang & Yadong Han & Lei Tan & Chuibing Huang, 2019. "Influence of T-Shape Tip Clearance on Energy Performance and Broadband Noise for a NACA0009 Hydrofoil," Energies, MDPI, vol. 12(21), pages 1-13, October.
    2. Liu, Yabin & Tan, Lei, 2020. "Method of T shape tip on energy improvement of a hydrofoil with tip clearance in tidal energy," Renewable Energy, Elsevier, vol. 149(C), pages 42-54.
    3. Liu, Ming & Tan, Lei & Cao, Shuliang, 2019. "Dynamic mode decomposition of cavitating flow around ALE 15 hydrofoil," Renewable Energy, Elsevier, vol. 139(C), pages 214-227.
    4. Huang, Zhenwei & Huang, Zhenyou & Fan, Honggang, 2020. "Influence of C groove on energy performance and noise source of a NACA0009 hydrofoil with tip clearance," Renewable Energy, Elsevier, vol. 159(C), pages 726-735.
    5. Huang, Shengxian & Hu, Yu & Wang, Ying, 2021. "Research on aerodynamic performance of a novel dolphin head-shaped bionic airfoil," Energy, Elsevier, vol. 214(C).
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    7. Nachtane, M. & Tarfaoui, M. & Goda, I. & Rouway, M., 2020. "A review on the technologies, design considerations and numerical models of tidal current turbines," Renewable Energy, Elsevier, vol. 157(C), pages 1274-1288.
    8. Kundu, Parikshit & Sarkar, Arunjyoti & Nagarajan, Vishwanath, 2019. "Improvement of performance of S1210 hydrofoil with vortex generators and modified trailing edge," Renewable Energy, Elsevier, vol. 142(C), pages 643-657.
    9. Zhang, Yongchao & Kang, Can & Ji, Yanguang & Li, Qing, 2019. "Experimental and numerical investigation of flow patterns and performance of a modified Savonius hydrokinetic rotor," Renewable Energy, Elsevier, vol. 141(C), pages 1067-1079.
    10. Shi, Guangtai & Liu, Zongku & Xiao, Yexiang & Li, Helin & Liu, Xiaobing, 2020. "Tip leakage vortex trajectory and dynamics in a multiphase pump at off-design condition," Renewable Energy, Elsevier, vol. 150(C), pages 703-711.
    11. Ahn, Soo-Hwang & Tian, Hong & Cao, Jingwei & Duo, Wenzhi & Wang, Zhengwei & Cui, Jianhua & Chen, Lin & Li, Yang & Huang, Guoping & Yu, Yunpeng, 2023. "Hydraulic performances of a bulb turbine with full field reservoir model based on entropy production analysis," Renewable Energy, Elsevier, vol. 211(C), pages 347-360.
    12. Zhijian Li & Wei Wang & Xiang Ji & Xiaofang Wang, 2021. "Investigation of Water Injection Influence on Cloud Cavitating Vortical Flow for a NACA66 (MOD) Hydrofoil," Energies, MDPI, vol. 14(18), pages 1-21, September.
    13. Liu, Ming & Tan, Lei & Cao, Shuliang, 2019. "Dynamic mode decomposition of gas-liquid flow in a rotodynamic multiphase pump," Renewable Energy, Elsevier, vol. 139(C), pages 1159-1175.
    14. Liu, Yabin & Tan, Lei, 2020. "Influence of C groove on suppressing vortex and cavitation for a NACA0009 hydrofoil with tip clearance in tidal energy," Renewable Energy, Elsevier, vol. 148(C), pages 907-922.
    15. Liu, Yabin & Han, Yadong & Tan, Lei & Wang, Yuming, 2020. "Blade rotation angle on energy performance and tip leakage vortex in a mixed flow pump as turbine at pump mode," Energy, Elsevier, vol. 206(C).
    16. Han, Yadong & Liu, Yabin & Tan, Lei, 2022. "Method of variable-depth groove on vortex and cavitation suppression for a NACA0009 hydrofoil with tip clearance in tidal energy," Renewable Energy, Elsevier, vol. 199(C), pages 546-559.
    17. Ahn, Soo-Hwang & Zhou, Xuezhi & He, Lingyan & Luo, Yongyao & Wang, Zhengwei, 2020. "Numerical estimation of prototype hydraulic efficiency in a low head power station based on gross head conditions," Renewable Energy, Elsevier, vol. 153(C), pages 175-181.
    18. Yabin Liu & Lei Tan & Binbin Wang, 2018. "A Review of Tip Clearance in Propeller, Pump and Turbine," Energies, MDPI, vol. 11(9), pages 1-30, August.
    19. Ge, Mingming & Manikkam, Pratulya & Ghossein, Joe & Kumar Subramanian, Roshan & Coutier-Delgosha, Olivier & Zhang, Guangjian, 2022. "Dynamic mode decomposition to classify cavitating flow regimes induced by thermodynamic effects," Energy, Elsevier, vol. 254(PC).

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