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

Siti Ruhliah Lizarose Samion; Mohamed Sukri Mat Ali

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 100Kuala 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, eading edge noise, eading 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

2018-07-15

How to Cite

Siti Ruhliah Lizarose Samion, & Mohamed Sukri Mat Ali. (2018). 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://semarakilmu.com.my/journals/index.php/fluid_mechanics_thermal_sciences/article/view/2787