Bayesian optimisation for low-noise aerofoil design with aerodynamic constraints

This paper presents an optimisation approach for designing low-noise Outlet Guide Vanes (OGVs) for fan broadband noise generated due to the interaction of turbulence and a cascade of 2-dimensional aerofoils. The paper demonstrates the usage of Bayesian optimisation with constraints to reduce the computation cost of optimisation. The prediction is based on Fourier synthesis of the impinging turbulence and the aerofoil response is predicted for each vortical modal component. A linearised unsteady Navier-Stokes solver is used to predict the aerofoil response due to an incoming harmonic vortical gust. This paper shows that to achieve noise reductions of 0.5 dB the penalty on the aerodynamic performance of 33% is observed compared to baseline aerofoil. Hence, the geometry changes such as thickness and nose radius can’t reduce broadband noise without effecting aerodynamic performance.

• Record URL:
  • https://doi.org/10.1177/1475472X20978395
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/1475472X
• Supplemental Notes:
  • © 2020 Paruchuri Chaitanya and Pratibha Vellanki.
• Authors:
  • Chaitanya, Paruchuri
  • 0000-0001-8812-8778
  • Vellanki, Pratibha
• Publication Date: 2021-3

Language

• English

Media Info

• Media Type: Web
• Features: References;
• Pagination: pp 109-129
• Serial:
  • International Journal of Aeroacoustics
  • Volume: 20
  • Issue Number: 1-2
  • Publisher: Sage Publications, Incorporated
  • ISSN: 1475-472X
  • EISSN: 20484003
  • Serial URL: https://journals.sagepub.com/home/jae

Subject/Index Terms

• TRT Terms: Aerodynamic noise; Airfoils; Bayes' theorem; Design; Noise sources; Optimization; Turbulence
• Subject Areas: Aviation; Design; Vehicles and Equipment;

Filing Info

• Accession Number: 01766704
• Record Type: Publication
• Files: TRIS
• Created Date: Mar 12 2021 10:05AM