Shape Optimization of Multi-Element Airfoil Using Morphing Deformation

Paper #:
  • 2014-01-0288

Published:
  • 2014-04-01
DOI:
  • 10.4271/2014-01-0288
Citation:
Gabbasa, A., Jawad, B., Liu, L., Arslan, S. et al., "Shape Optimization of Multi-Element Airfoil Using Morphing Deformation," SAE Technical Paper 2014-01-0288, 2014, doi:10.4271/2014-01-0288.
Pages:
9
Abstract:
This work studies an optimization tool for 2D and 3D a multi-element airfoil which utilizes the power of CFD solver of a Shape Optimizer package to find the most optimal shape of multi-element airfoil as per designer's requirement. The optimization system coupled with Fluent increases the utilization and the importance of CFD solver.This work focuses on combining the high fidelity commercial CFD tools (Fluent) with numerical optimization techniques to morph high lift system. In this work strategy we performed morphing (grid deformation) directly inside the Fluent code without rebuilding geometry and the mesh with an external tool. Direct search method algorithms such as the Simplex, Compass, and Torczon are used; Navier-Stokes equations were solved for turbulent, incompressible flow using k-epsilon model and SIMPLE algorithm using the commercial code ANSYS Fluent. Detailed studies are done on take-off/landing flight conditions; a number of different built-in optimization algorithms and the way to best employ them are investigated. The results show that the optimization is successful in improving the aerodynamic performance.
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