Multidisciplinary Code Coupling for Analysis and Optimization of Aeroelastic Systems


Nikbay M. , ONCU L., AYSAN A.

JOURNAL OF AIRCRAFT, vol.46, no.6, pp.1938-1944, 2009 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 46 Issue: 6
  • Publication Date: 2009
  • Doi Number: 10.2514/1.41491
  • Title of Journal : JOURNAL OF AIRCRAFT
  • Page Numbers: pp.1938-1944

Abstract

This paper presents a practical methodology for static aeroelastic analysis and aeroelastic optimization via coupling of high-fidelity commercial codes. A finite-volume-based flow solver FLUENT is used to solve three-dimensional Elder equations, Gambit is used to generate mesh in the fluid domain, and CATIA is used to model parametric solid geometry. Abaqus. a structural finite element method solver. is used to compute the structural response of the aeroelastic system. The mesh-based parallel-code coupling interface MpCCI is used to exchange the pressure land displacement information between FLUENT and Abaqus to perform a loosely coupled aeroelastic analysis by a staggered algorithm, and modeFRONTIER software is used as the optimization driver for scheduling a nondominated sorting genetic algorithm initiated with design of experiments. First. an AGARD 445.6 wing configuration is optimized with objectives of maximum lift/drag ratio and minimum weight. Optimization variables are chosen as sweep angle at the quarter-chord and the taper ratio of the wing. Second, a more realistic wing model, ARW-2, is optimized for thickness values of the inner ribs and spars. Aeroelastic analysis produce consistent results with experimental data.. and the applied optimization methodology results in Pareto-optimal solutions.