Turbulence interaction noise mechanisms and their reduction with porous media

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• Luke Bowen (University of Bristol)
• Monday 06 June 2022, 15:00-16:00
• MR20.

If you have a question about this talk, please contact Alistair Hales.

This presentation covers some previously unreported observations in aerofoil turbulence interaction noise experimentation, which aid the development of noise reduction strategies. Through detailed velocity, unsteady surface pressure and far-field noise measurements, the noise generation can be traced from the turbulent inflow to the far-field noise. Further understanding has been gained from studying flows of varying turbulence intensity and length scale, resulting in the identification of the physical changes that affect the far-field noise. The implementation of a porous structure with a set volume in the leading edge region of the aerofoil is understood to reduce the far-field noise. Optimisation of the porous structure for noise reduction is a more difficult task due to the number of control parameters. However, experimental observations contribute to the understanding of porous structures for the reduction of turbulence interaction noise.

This talk is part of the Waves Group (DAMTP) series.

This talk is included in these lists:

• MR20
• Waves Group (DAMTP)

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