Abstract
Under the design state of certain general aircraft, the laminar optimization design is performanced based on free-form deformation (FFD) parametric method and the NSGA-II multiobjective optimization n calibration under natural transition condition, with Menter k-ω SST two equation turbulence model and γ-Reθt transition model applied to transition prediction. Besides, comparisons between direct and scaled 2d geometric optimization are conducted and aerodynamic characteristics of optimized airfoils are also discussed in the present paper. The results show that the optimized airfoil meets the design requirements, optimization for the thickness of the optimized airfoil can promote efficiency. The optimization design method proposed in this paper can provide reference for the high-lift laminar airfoil design of general aircraft.
| Original language | English |
|---|---|
| Pages (from-to) | 339-347 |
| Number of pages | 9 |
| Journal | Xibei Gongye Daxue Xuebao/Journal of Northwestern Polytechnical University |
| Volume | 35 |
| Issue number | 2 |
| State | Published - 1 Apr 2017 |
Keywords
- Airfoil design
- FFD
- General aircraft
- Genetic algorithm
- High-lift airfoil
- Natural laminar flow