Please use this identifier to cite or link to this item:
Title: Aerodynamic shape design of transonic airfoils using stochastic optimisation methods and computational fluid dynamics
Authors: Lee, Shiang Long.
Keywords: DRNTU::Engineering::Aeronautical engineering::Aerodynamics
Issue Date: 2000
Abstract: The present study investigates a number of airfoil design optimisation problems. A CFD method based on a finite volume method is used to solve the compressible Navier-Stokes equations. It is used to capture the details of flow separation, boundry-layer and turbulent flow characteristics that provide a good estimate of the design objective functions. The objective functions are then optimised in the design process by using stochastic optimisation methods of Simulated Annealing, a number of variants of Simulated Annealing and Genetic Algorithm. The study addresses both constrained and unconstrained airfoil design problems by integrating CFD, stochastic optimisation methods and Computer-Aided Geometry. The airfoil shapes are represented by using parametric functions to achieve an efficient optimisation process that obtains optimum airfoil shapes satisfying the desired design objectives and constraints. An attempt is made to improve the efficiency of the Simulated Annealing scheme by introducing a new variant, i.e. Simulated Annealing with Constant Acceptance Ratio (SACAR).
Rights: Nanyang Technological University
Fulltext Permission: restricted
Fulltext Availability: With Fulltext
Appears in Collections:MAE Theses

Files in This Item:
File Description SizeFormat 
  Restricted Access
32 MBAdobe PDFView/Open

Page view(s) 10

checked on Oct 26, 2020

Download(s) 10

checked on Oct 26, 2020

Google ScholarTM


Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.