What is it about?
When seeking to reduce leading edge noise- noise that occurs when incoming flow scatters off of a flat surface- we take a new approach of reducing the incoming turbulence instead of the geometry and properties of the plate itself. We present a mathematical model that focuses on exploiting different turbulent behaviour in different directions to reduce noise, and then validate our model against experimental results.
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Why is it important?
It is an in-depth study of a less common mechanism for noise reduction, inducing anisotropy in the incoming flow. In addition, a connection is made with impedance boundary conditions on the plate itself, thus taking the first steps in understanding whether changing the flow and changing the plate surface can have mutually beneficial effects.
Perspectives
With this article I hope to introduce a model that is mathematically flexible enough to cover a variety of applications in the future. It was a pleasure to write it with such a great team!
Alistair Hales
University of Cambridge
Read the Original
This page is a summary of: Reduction of Leading-Edge Noise by Tailored Turbulence Anisotropy, June 2022, American Institute of Aeronautics and Astronautics (AIAA),
DOI: 10.2514/6.2022-3046.
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