#7478. Wake-aerofoil interaction noise control with trailing-edge serrations

October 2026publication date
Proposal available till 18-05-2025
4 total number of authors per manuscript0 $

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Journal’s subject area:
Aerospace Engineering;
Fluid Flow and Transfer Processes;
Nuclear Energy and Engineering;
Mechanical Engineering;
Chemical Engineering (all);
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Abstract:
The present study experimentally investigates the effective reduction of wake-aerofoil interaction noise in a tandem aerofoil configuration using trailing-edge sawtooth serrations. The far-field noise results clearly show that at the ‘head-on’ wake impingement, the use of sawtooth serrations on the trailing-edge of the front aerofoil can lead to substantial reduction of the wake-aerofoil interaction noise of approximately 10 dB without any noticeable increase at other frequencies and changes to directivity pattern. Subsequently, detailed near-field measurements were carried out to investigate further the flow dynamics associated with the reduction of the interaction noise.
Keywords:
Sawtooth serrations; Turbulence interaction noise

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