

	Mechanics På svenska

Project

Optimal design of vehicles with low drag.

Research Area:

Fluid mechanics

Project Members:

Hanifi, A.

Henningson, D.S.H.

Pralits, J. O.

Sponsor:

IVS, SSF

Project Description

The project aims at developing methodology needed for optimal design of vehicles with low drag. The general objective is to link aerodynamic computational tools with optimization techniques to create a more automated flow design process in order to improve flow efficiency. The sensitivity of the predicted drag, say, on the design parameters chosen can then effectively be determined by the use of so called adjoint methods. The aim is to automatically incorporate a transition prediction method into the design process of low-drag vehicles. This chosen problem should be seen as one interesting example where these optimal design methods can be applied. The techniques developed in the project are general and once mastered could be applied in a number of other design applications.

Publications related to the project

Year	Title
2002	Adjoint-based optimization of steady suction for disturbance control in incompressible flows J. Fluid Mech. 467 129-161 (Published)
2002	Optimization of steady suction for disturbance control on infinite swept wings ASME, Fluids Engineering Division Summer Meeting, Montreal, Canada, July 14-18 (Accepted)
2002	Optimal suction design for HLFC applications ALTTA Technical Report 57 (Published)
2001	Sensitivity Analysis Using Adjoint Parabolized Stability Equations for Compressible Flows Flow, Turbulence and Combustion, Kluwer 65 3/4 321-346 (Published)
2001	Adjoint PSE and boundary layer equations for HLFC ALTTA Technical Report 10 (Published)
2000	Sensitivity Analysis Using Adjoint Parabolized Stability Equations for Compressible Flows. Advances in Turbulence VIII. (2000) Proc. 8th European Turbulence Conference, Barcelona, Spain 157-160 (Published)
2000	Adjoint-based Suction Optimization for 3D Boundary Layer Flows. FFA TN 2000-58 (Published)

Internal Reports related to the project

Year	Title	Document Type
2001	Towards optimal design of vehicles with low drag: Applications to sensitivity analysis and optimal control	Licentiate thesis