论文信息 - Multiobjective GA for SST Wing-Body Shape Design

Multiobjective GA for SST Wing-Body Shape Design

Abstract In this research, multiobjective optimization system has been developed to reduce the aerodynamic drag and the sonic boom for SST wing-body configuration. Wing and fuselage are defined by 131 design variables and optimized at the same time. Multiblock grids around SST wing-body configuration are generated automatically and an Euler solver is used to evaluate the aerodynamic performance of SST wing-body configuration. Sonic boom is evaluated based on the equivalent area distribution by Darden. MOGA is used as an optimizer of the present optimization. To reduce the large computation time, CFD computations are parallelized by a simple master-slave concept on SGI ORIGIN 2000 at The Institute of Fluid Science at Tohoku University.

Daisuke Sasaki | Shigeru Obayashi | Guowei Yang

[1] Christine M. Darden. Sonic boom theory - Its status in prediction and minimization , 1977 .

[2] R. M. Hicks,et al. Single-Point and Multipoint Aerodynamic Shape Optimization of High-Speed Civil Transport , 2001 .

[3] Kalyanmoy Deb,et al. Multi-objective optimization using evolutionary algorithms , 2001, Wiley-Interscience series in systems and optimization.

[4] A. Jameson,et al. Lower-upper Symmetric-Gauss-Seidel method for the Euler and Navier-Stokes equations , 1988 .

[5] Shigeru Obayashi,et al. Multiblock Navier-Stokes Solver for Wing/Fuselage Transport Aircraft , 2002 .

[6] Kazuhiro Nakahashi,et al. Navier-Stokes Optimization of Supersonic Wings with Four Objectives Using Evolutionary Algorithm , 2002 .