Large Eddy Simulation of Flow Around Airfoils

Objective

Computational Fluid Dynamics is an important tool when designing aircraft. For conventional aircraft under cruise conditions, the current generation of CFD (Computational Fluid Dynamics) codes allows a computerbased design to be achieved with some confidence. The design process of future aircrafts requires extensive research and development in CFD. Efficient and accurate CFD methods allow the aircraft industry to reduce the extensive experimental testing which usually is very expensive. CFD will also allow faster development of new aircraft and modification of existing aircrafts, as it may be sufficient to use measurements only in the later stage of development. To perform accurate numerical simulations of such complex flows, new and more advanced turbulence models are needed. It is expected that, at the end of the LESFOIL project, the feasibility of the application of Large Eddy Simulations (LES) to aerodynamic flows will have been assessed, both under the aspect of the reliability of results and of the computer resources needed for the calculations. Given the starting position of the partners the existing experience and knowledge of LES, it is expected that very rapid progress can be achieved on the performance of an initial LES of flow around a simple airfoil. A considerable part of the supported time will be spent in carefully analyzing results of such a simulation in order to optimize the numerical methods, investigate the size and refinement of the mesh required for a useful LES to be carried out for airfoils, near-wall treatment, transition, and investigating alternative subgrid models. The main objectives of the project are: To provide know-how of an advance CFD method to the European aeronautical industry; when will LES be feasible for the European aeronautical industry?Demonstration of the feasibility of LES of flow over an airfoil; Assessment of the computational requirements to carrying out LES for the simple airfoil and for more complex configurations in future; Development of highly efficient numerical methods for the LES of airfoil flows; Comparisons of competing (dynamic) subgrid-scale models for these flows.

Programme(s)

• FP4-BRITE/EURAM 3 - Specific research and technological development programme in the field of industrial and materials technologies, 1994-1998

Topic(s)

• 0301 - Aeronautics

Funding Scheme

CSC - Cost-sharing contracts

Coordinator

CHALMERS TEKNISKA HOGSKOLA AB*

Address

7,Hoersalsvaegen 7
412 96 Goeteborg
Sweden

Participants (9)

Alenia Aerospazio Un'Azienda Finmeccanica SpA

Italy

Address

Corso Marche 41
10146 Torino

CENTRE EUROPEEN DE RECHERCHE ET DE FORMATION AVANCEE EN CALCUL SCIENTIFIQUE

France

Address

42,Avenue Gustave Coriolis 42
31057 Toulouse

DASSAULT AVIATION S.A.

France

Address

Quai Marcel Dassault 78
92552 Saint Cloud

Fluent Europe Ltd

United Kingdom

Address

146 West Street
S1 4ES Sheffield

Office National d'Études et de Recherches Aérospatiales (ONERA)

France

Address

29 Avenue De La Division Leclerc
92322 Châtillon

QUEEN MARY AND WESTFIELD COLLEGE - UNIVERSITY OF LONDON

United Kingdom

Address

Mile End Road
E1 4NS London

UNIVERSITAET KARLSRUHE (TECHNISCHE HOCHSCHULE)

Germany

Address

Kaiserstrasse 12
76128 Karlsruhe

UNIVERSITY OF MANCHESTER, INSTITUTE OF SCIENCE AND TECHNOLOGY

United Kingdom

Address

Sackville Street
Manchester

University of Surrey

United Kingdom

Address

GU2 5XH Guildford