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The current investigation studies the behavior of the tip vortices of three different vortex generator (VG) shapes such as rectangular, triangular, and airfoil-shaped VGs on wind turbine airfoil’s aerodynamic performance using steady-state CFD simulation in OpenFOAM. Vortex generators are passive flow control devices affixed to the inboard sections of wind turbine blades. They produce trailing tip vortices from the free tips on one end, while the other end remains connected to the turbine blade. These vortices play a crucial role in revitalizing the boundary layer near the surface, thereby augmenting the resistance to flow separation. The study specifically concentrates on a wind turbine blade featuring an s809 airfoil section. It compares simulations conducted with and without VGs. The analysis involves analyzing vorticity patterns at various downstream locations of VGs to comprehend the flow structure generated by VGs.

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CFD Study of Tip Vortices Induced by Different Vortex Generator Shapes for Stall Control on Wind Turbine Blades

  • 会议论文

  • 发表日期：

    2025年

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  • Hariprasanth Palanivel,
  • Rinku Mukherjee

摘要

The current investigation studies the behavior of the tip vortices of three different vortex generator (VG) shapes such as rectangular, triangular, and airfoil-shaped VGs on wind turbine airfoil’s aerodynamic performance using steady-state CFD simulation in OpenFOAM. Vortex generators are passive flow control devices affixed to the inboard sections of wind turbine blades. They produce trailing tip vortices from the free tips on one end, while the other end remains connected to the turbine blade. These vortices play a crucial role in revitalizing the boundary layer near the surface, thereby augmenting the resistance to flow separation. The study specifically concentrates on a wind turbine blade featuring an s809 airfoil section. It compares simulations conducted with and without VGs. The analysis involves analyzing vorticity patterns at various downstream locations of VGs to comprehend the flow structure generated by VGs.