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The research explores the biomimetic qualities of owl wing morphology, particularly its sound-reducing and aerodynamic capabilities, in comparison with a conventional airfoil. Owl wings are known for their unique saw-tooth-like serrations along the leading edge, which play a crucial role in reducing noise by dissipating eddy flow and mitigating turbulence-induced sound. To replicate this effect, serrations were incorporated into the leading edge of a NACA 63-412 airfoil. A thorough numerical analysis was conducted on both the standard and serrated airfoils at various angles of attack (0, 3, 6, 9, and 12°), evaluating both aerodynamic and acoustic performance. The results revealed a significant reduction in sound production across different flow conditions for the serrated airfoil, underscoring the effectiveness of this biomimetic adaptation.

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Aerodynamic Performance Study on Owl-Inspired Serrations for Sound Suppression

  • 会议论文

  • 发表日期：

    2025年

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  • R. Saravanan,
  • V. T. Gopinathan,
  • C. Suresh,
  • B. Aashik Hilahi,
  • I. Arun Matheu,
  • V. Dhanushkumar,
  • K. Manoj Kumar

摘要

The research explores the biomimetic qualities of owl wing morphology, particularly its sound-reducing and aerodynamic capabilities, in comparison with a conventional airfoil. Owl wings are known for their unique saw-tooth-like serrations along the leading edge, which play a crucial role in reducing noise by dissipating eddy flow and mitigating turbulence-induced sound. To replicate this effect, serrations were incorporated into the leading edge of a NACA 63-412 airfoil. A thorough numerical analysis was conducted on both the standard and serrated airfoils at various angles of attack (0, 3, 6, 9, and 12°), evaluating both aerodynamic and acoustic performance. The results revealed a significant reduction in sound production across different flow conditions for the serrated airfoil, underscoring the effectiveness of this biomimetic adaptation.