Large eddy Simulation of Flow Around Airfoils (LESFOIL): A Brite-Euram Project |
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Coordinator: |
Lars Davidson lada@tfd.chalmers.se |
Researcher at Chalmers: |
Simon Dahlström sd@tfd.chalmers.se |
Start of project: | February 1997 |
End of project: | January 2001 |
SUMMARY 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 computer-based 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:
PARTNERS Chalmers, Sweden, Coordinator L. Davidson lada@tfd.chalmers.se Alenia, Italy N. Ceresola cfd@liat.alenia.polito.it CERFACS, France F. Ducros ducros@cerfacs.fr Dassault, France M. Mallet michel.mallet@dassault-aviation.fr Fluent Europe Ltd, UK D. Cokljat davor@fluent.co.uk Karlruhe University, Germany W. Rodi rodi@ifh.bau-verm.uni-karlsruhe.de ONERA, France T.H. Le thle@onera.fr University of Surrey, UK P. Voke p.voke@surrey.ac.uk Queen Mary & Westfield College, UK M. Leschziner Mike.Leschziner@qmw.ac.uk |
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