Aerodynamic Noise Measurement In Anechoic Wind Tunnel of Rod-Airfoil With Leading Edge Serrations

Authors

  • Siti Ruhliah Lizarose Samion Malaysia-Japan International of Institute of Technology, Universiti Teknologi Malaysia, 54 100 Kuala Lumpur, Malaysia
  • Mohamed Sukri Mat Ali Department of Mechanical Precision Engineering, Malaysia-Japan International Institute of Technology (MJIIT), Universiti Teknologi Malaysia, 54100 Kuala Lumpur, Malaysia

Keywords:

airfoil noise, leading edge noise, leading edge serrations

Abstract

Turbulent flow interaction with the leading edge of an airfoil generates a well-known leading edge noise. The present work is an experimental investigation of reducing the leading edge noise by adapting serrations on the leading edge of NACA0012 airfoil. A rod is placed upstream of the airfoil to magnify the turbulence flow-leading edge interaction. Locations and the size of the serrations are two parameters being investigated for the noise reduction. The study found that a noise reduction up to 3.5 dB is obtained when the size of the serration is wider. Additionally, more sound reduction can be obtained when the angle of attack is increased.

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Published

2021-01-18

How to Cite

Samion, S. R. L. ., & Mat Ali, M. S. . (2021). Aerodynamic Noise Measurement In Anechoic Wind Tunnel of Rod-Airfoil With Leading Edge Serrations. Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, 47(1), 97–107. Retrieved from https://www.akademiabaru.com/submit/index.php/arfmts/article/view/2232

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