Laminar airfoil aerodynamic optimization design based on Delaunay graph mapping and FFD technique

Jiangtao Huang, Zhenghong Gao, Junqiang Bai, Ke Zhao, Jing Li, Fang Xu

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

In this paper, a free-form deformation (FFD) parameterization method is established based on the non-uniform rational B-splines (NURBS) basic function, and a multi-block structure grid deformation technique is established by the Delaunay graph mapping method. By coupling the parameterization method, the grid deformation technology and computational fluid dynamics (CFD) with particle swarm optimization (PSO) arithmetic, an aerodynamic optimization design system is constructed. This system is applied to a laminar airfoil design of high altitude long endurance (HALE) aircraft. The aerodynamic characteristic object function is evaluated by solving Navier-Stokes equations, and the γ-Rē θt transition model coupling with shear stress transport (SST) turbulent model is introduced to numerically simulate boundary layer transition. The aerodynamic characteristics of the optimized airfoil show that the laminar airfoil aerodynamic optimization design system established in this paper has high efficiency and application value for the airfoil design of HALE aircraft.

Original languageEnglish
Pages (from-to)1817-1826
Number of pages10
JournalHangkong Xuebao/Acta Aeronautica et Astronautica Sinica
Volume33
Issue number10
StatePublished - Oct 2012

Keywords

  • Aerodynamic configuration optimization design
  • Boundary layers transition
  • Delaunay graph mapping
  • FFD technique
  • Laminar flow airfoil
  • Numerical simulation

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