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Numerical simulations are performed to identify the variation of flow features for the case of double-element inverted airfoil with variation in ground height and flap deflection angle. The numerical method is validated with single-element airfoil with a specific ride height, and double-element airfoil for low flap angle at free stream conditions. Increasing the flap angle for the freestream condition has shown that the stagnation point moves towards right over the pressure surface giving rise to higher suction peak. Reducing the ride height to 0.1 c with a specific flap angle has shown that the enclosed area acts as a diffuser and enhances the lift coefficient.

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Aerodynamic Analysis of Multi-element Inverted Airfoil of Race Cars for Improved Ground Effect Performance

  • 会议论文

  • 发表日期：

    2026年

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  • S. Umesh,
  • A. T. Sriram,
  • M. Sivapragasam

摘要

Numerical simulations are performed to identify the variation of flow features for the case of double-element inverted airfoil with variation in ground height and flap deflection angle. The numerical method is validated with single-element airfoil with a specific ride height, and double-element airfoil for low flap angle at free stream conditions. Increasing the flap angle for the freestream condition has shown that the stagnation point moves towards right over the pressure surface giving rise to higher suction peak. Reducing the ride height to 0.1 c with a specific flap angle has shown that the enclosed area acts as a diffuser and enhances the lift coefficient.