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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.

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