Abstract
First we explore the influence on the aerodynamic characteristics of the tilt angle, height and angle of the installation of the blended winglet. Then, we build the optimization system with FFD technology, Latin hypercube sampling method, Kriging surrogate model and the improved particle swarm optimization algorithm. We apply this system to the blended winglet; through the appropriate arrangement of the FFD control body frame we achieve a framework for FFD parameterized design of multiple control winglets. Optimization results show that the drag of the designed blended winglets decrease obviously as compared with that of the original configuration. Compared with the parameter analysis of those three wingtip devices ("wingtip extension", "eddy diffusion" and "double fork scimitar"), we draw some valuable conclusions for the design of wingtip devices.
| Original language | English |
|---|---|
| Pages (from-to) | 533-539 |
| Number of pages | 7 |
| Journal | Xibei Gongye Daxue Xuebao/Journal of Northwestern Polytechnical University |
| Volume | 33 |
| Issue number | 4 |
| State | Published - 1 Aug 2015 |
Keywords
- Boundary conditions
- Computational fluid dynamics
- Computer simulation
- Constrained optimization
- Deformation
- Design
- Drag coefficient
- FFD(Free Form Deformation)
- Flow fields
- Improved PSO
- Kriging surrogate model
- Mach number
- Mesh generation
- Navier Stokes equation
- Optimization
- Parameterization
- Particle swarm optimization(PSO)
- Reynolds number
- Sampling
- Schematic diagrams
- Transport aircraft
- Turbulence models
- Wingtip device