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arXiv · 2301.13047

Trailing-Edge Noise Reduction using Porous Treatment and Surrogate-based Global Optimization

Jan Rottmayer·Emre Özkaya·Sutharsan Satcunanathan·Beckett Y. Zhou·Max Aehle·Nicolas R. Gauger·Matthias Meinke·Wolfgang Schröder·Shaun Pullin
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Abstract

Broadband noise reduction is a significant problem in aerospace and industrial applications. Specifically, the noise generated from the trailing edge of an airfoil poses a challenging problem with various proposed solutions. This study investigates the porous trailing edge treatment. We use surrogate-based gradient-free optimization and an empirical noise model to efficiently explore the design space and find the optimal porosity distribution. As a result, a predicted 8-10 dB reduction in the broadband 300-5000 Hz was achieved. Furthermore, the optimal design emphasizes the design space's complexity and global exploration's difficulty. Further, the optimal design presents a low porous solution while constituting significant noise reduction.

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Jan Rottmayer, Emre Özkaya, Sutharsan Satcunanathan, Beckett Y. Zhou, Max Aehle, Nicolas R. Gauger, Matthias Meinke, Wolfgang Schröder, Shaun Pullin. 2023-02-03. Trailing-Edge Noise Reduction using Porous Treatment and Surrogate-based Global Optimization. https://arxiv.org/abs/2301.13047

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