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Aerodynamic Shape Optimization via Global Extremum Seeking

Lee, Kuan; Moase, Will; Khong, Sei Zhen LU ; Ooi, Andrew and Manzie, Chris (2015) In IEEE Transactions on Control Systems Technology 23(6). p.2336-2343
Abstract (Swedish)
Optimization of aerodynamic shapes using computational fluid dynamics (CFD) approaches has been successfully demonstrated over a number of years; however, the typical optimization approaches employed utilize gradient algorithms that guarantee only the local optimality of the solution. While numerous global optimization techniques exist, they are usually too time consuming in practice. In this brief, a modified global optimization algorithm (DIRECT-L) is introduced and is utilized in the context of sampled-data global extremum seeking. The theoretical framework and conditions under which the convergence to the steady state of the CFD solver can be interpreted as plant dynamics are stated. This method alleviates the computational burden by... (More)
Optimization of aerodynamic shapes using computational fluid dynamics (CFD) approaches has been successfully demonstrated over a number of years; however, the typical optimization approaches employed utilize gradient algorithms that guarantee only the local optimality of the solution. While numerous global optimization techniques exist, they are usually too time consuming in practice. In this brief, a modified global optimization algorithm (DIRECT-L) is introduced and is utilized in the context of sampled-data global extremum seeking. The theoretical framework and conditions under which the convergence to the steady state of the CFD solver can be interpreted as plant dynamics are stated. This method alleviates the computational burden by reducing sampling and requiring only partial convergence of the CFD solver for each iteration of the optimization design process. The approach is demonstrated on a simple example involving drag minimization on a 2-D aerofoil. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
IEEE Transactions on Control Systems Technology
volume
23
issue
6
pages
2336 - 2343
publisher
IEEE--Institute of Electrical and Electronics Engineers Inc.
external identifiers
  • wos:000363253300022
  • scopus:84923115577
ISSN
1558-0865
DOI
10.1109/TCST.2015.2396771
language
English
LU publication?
yes
id
3d9326ec-b0ca-4989-a531-6acb285ae003 (old id 5276024)
date added to LUP
2015-04-17 11:12:46
date last changed
2017-10-29 03:06:29
@article{3d9326ec-b0ca-4989-a531-6acb285ae003,
  abstract     = {Optimization of aerodynamic shapes using computational fluid dynamics (CFD) approaches has been successfully demonstrated over a number of years; however, the typical optimization approaches employed utilize gradient algorithms that guarantee only the local optimality of the solution. While numerous global optimization techniques exist, they are usually too time consuming in practice. In this brief, a modified global optimization algorithm (DIRECT-L) is introduced and is utilized in the context of sampled-data global extremum seeking. The theoretical framework and conditions under which the convergence to the steady state of the CFD solver can be interpreted as plant dynamics are stated. This method alleviates the computational burden by reducing sampling and requiring only partial convergence of the CFD solver for each iteration of the optimization design process. The approach is demonstrated on a simple example involving drag minimization on a 2-D aerofoil.},
  author       = {Lee, Kuan and Moase, Will and Khong, Sei Zhen and Ooi, Andrew and Manzie, Chris},
  issn         = {1558-0865},
  language     = {eng},
  number       = {6},
  pages        = {2336--2343},
  publisher    = {IEEE--Institute of Electrical and Electronics Engineers Inc.},
  series       = {IEEE Transactions on Control Systems Technology},
  title        = {Aerodynamic Shape Optimization via Global Extremum Seeking},
  url          = {http://dx.doi.org/10.1109/TCST.2015.2396771},
  volume       = {23},
  year         = {2015},
}