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Improvement of performance of S1210 hydrofoil with vortex generators and modified trailing edge

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  • Kundu, Parikshit
  • Sarkar, Arunjyoti
  • Nagarajan, Vishwanath

Abstract

Designing a high-performance hydrofoil is a fundamental challenge for the current turbine blade designers. In this paper, the performance of S1210 hydrofoil, commonly used in the tidal current turbine blades, in presence of (i) Vortex Generators (VGs), and (ii) modified trailing edge is numerically studied. The results show that attaching counter-rotating VGs near the trailing edge of the foil can increase the lift coefficient by 17% and delay the stall angle from 10° to 12°. Constructing a rounded and thicker trailing edge can help to improve the hydrodynamic performance by increasing the lift coefficient by 13.5%. The combination of VGs (located near the trailing edge) and rounded trailing edge can increase the glide ratio significantly. These observations have been explained by plotting the pressure coefficients and velocity profiles at different locations on the foil surface. The findings will be useful to manufacture a stronger blade profile and extract more power from the current turbines that operate at wide current speed variation.

Suggested Citation

  • 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.
    • Handle: RePEc:eee:renene:v:142:y:2019:i:c:p:643-657
    DOI: 10.1016/j.renene.2019.04.148
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    References listed on IDEAS

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    1. Gao, Linyue & Zhang, Hui & Liu, Yongqian & Han, Shuang, 2015. "Effects of vortex generators on a blunt trailing-edge airfoil for wind turbines," Renewable Energy, Elsevier, vol. 76(C), pages 303-311.
    2. Liu, Yabin & Tan, Lei, 2018. "Tip clearance on pressure fluctuation intensity and vortex characteristic of a mixed flow pump as turbine at pump mode," Renewable Energy, Elsevier, vol. 129(PA), pages 606-615.
    3. 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.
    4. Goundar, Jai N. & Ahmed, M. Rafiuddin & Lee, Young-Ho, 2012. "Numerical and experimental studies on hydrofoils for marine current turbines," Renewable Energy, Elsevier, vol. 42(C), pages 173-179.
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    Cited by:

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    2. Fan, Menghao & Sun, Zhaocheng & Dong, Xiangwei & Li, Zengliang, 2022. "Numerical and experimental investigation of bionic airfoils with leading-edge tubercles at a low-Re in considering stall delay," Renewable Energy, Elsevier, vol. 200(C), pages 154-168.
    3. Manolesos, M. & Chng, L. & Kaufmann, N. & Ouro, P. & Ntouras, D. & Papadakis, G., 2023. "Using vortex generators for flow separation control on tidal turbine profiles and blades," Renewable Energy, Elsevier, vol. 205(C), pages 1025-1039.
    4. Xin-Kai Li & Wei Liu & Ting-Jun Zhang & Pei-Ming Wang & Xiao-Dong Wang, 2019. "Experimental and Numerical Analysis of the Effect of Vortex Generator Installation Angle on Flow Separation Control," Energies, MDPI, vol. 12(23), pages 1-19, December.

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