Multi-element high-lift design using the Navier-Stokes equations

Eyi S., Chand K., Lee K., Rogers S., Kwak D.

Fluid Dynamics Conference, 1996, Louisiana, United States Of America, 17 - 20 June 1996, pp.1-11 identifier

  • Publication Type: Conference Paper / Full Text
  • Volume:
  • Doi Number: 10.2514/6.1996-1943
  • City: Louisiana
  • Country: United States Of America
  • Page Numbers: pp.1-11
  • Middle East Technical University Affiliated: No


© by the American Institute of Aeronautics and Astronautics, Inc. All rights reserved.A method of optimizing the geometry and position of high-lift system elements is presented. The design optimization method maximizes lift without increasing the drag of multi-element airfoils at take-off and landing configurations. It uses an incompressible Navier-Stokes flow solver, a chimera overlaid grid system, and a constrained numerical optimizer. A finite-difference method is used to obtain aerodynamic sensitivity derivatives. Optimum geometries and positions of high-lift devices are obtained at reasonable computational costs. Results demonstrate that numerical optimization can be an attractive design tool for the development of multi-element high-lift systems.