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Presentation
Multi-Objective Aeroacoustic Shape Optimization By Variable-Fidelity Models and Response Surface Surrogates
Proceedings of the 56th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference (2015, Kissimmee, FL)
  • Leifur Leifsson
  • Slawomir Koziel
  • Y. A. Tesfahuneng
  • Serhat Hosder, Missouri University of Science and Technology
Abstract
The trade-offs between the aerodynamic performance and aerodynamic noise signature of two-dimensional airfoil shapes in low-speed, high-lift flow are investigated. The figures of interest are calculated using Reynolds-Averaged Navier-Stokes-based computational fluid dynamics (CFD) simulations. A computationally efficient procedure for obtaining the Pareto front of the figures of interest is presented. The proposed approach utilizes a multi-objective evolutionary algorithm (MOEA) that works with a fast surrogate model of the aerodynamic surface under design, obtained with kriging interpolation of low-fidelity CFD simulations. The surrogate is enhanced by means of space mapping response correction based on a limited number of high-fidelity CFD simulation training points allocated in the design space. The Pareto set generated by the multi-objective optimization of the surrogate using MOEA is iteratively refined by local enhancements of the surrogate model. The proposed method allows us to obtain--at a low computational cost--a set of airfoil geometries representing the trade-offs between the figures of interest. We illustrate the approach using an example of an airfoil at a Mach number of 0.208, lift coefficient of 1.5, and a Reynolds number of 0.665 million.
Meeting Name
56th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference (2015: Jan. 5-9, Kissimmee, FL)
Department(s)
Mechanical and Aerospace Engineering
Research Center/Lab(s)
Center for High Performance Computing Research
Keywords and Phrases
  • Aeroacoustics,
  • Aerodynamics,
  • Airfoils,
  • Commerce,
  • Economic and Social Effects,
  • Evolutionary Algorithms,
  • Interpolation,
  • Iterative Methods,
  • Lift,
  • Multiobjective Optimization,
  • Navier Stokes Equations,
  • Reynolds Number,
  • Shape Optimization,
  • Structural Dynamics,
  • Aero-Dynamic Performance,
  • Aerodynamic Surfaces,
  • Computational Fluid Dynamics Simulations,
  • Computationally Efficient,
  • Kriging Interpolation,
  • Multi Objective Evolutionary Algorithms,
  • Reynolds - Averaged Navier-Stokes,
  • Two-Dimensional Airfoils,
  • Computational Fluid Dynamics
International Standard Book Number (ISBN)
9781624103421
Document Type
Article - Conference proceedings
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2015 American Institute of Aeronautics and Astronautics (AIAA), All rights reserved.
Publication Date
1-1-2015
Citation Information
Leifur Leifsson, Slawomir Koziel, Y. A. Tesfahuneng and Serhat Hosder. "Multi-Objective Aeroacoustic Shape Optimization By Variable-Fidelity Models and Response Surface Surrogates" Proceedings of the 56th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference (2015, Kissimmee, FL) (2015)
Available at: http://works.bepress.com/leifur-leifsson/11/