|Researcher at Chalmers:||
|Start of project:||February 1997|
|End of project:||January 2001|
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:
Chalmers, Sweden, Coordinator
L. Davidson firstname.lastname@example.org
N. Ceresola email@example.com
F. Ducros firstname.lastname@example.org
M. Mallet email@example.com
Fluent Europe Ltd, UK
D. Cokljat firstname.lastname@example.org
Karlruhe University, Germany
W. Rodi email@example.com
T.H. Le firstname.lastname@example.org
University of Surrey, UK
P. Voke email@example.com
Queen Mary & Westfield College, UK
M. Leschziner Mike.Leschziner@qmw.ac.uk
Results from the Midterm Report are summarized in:
L. Davidson, "LESFOIL: A European Project on Large Eddy Simulations Around a High-lift Airfoil at High Reynolds Number", ECCOMAS 2000, European Congress on Computational Methods in Applied Sciences and Engineering, 11-14 September, Barcelona, Spain, 2000
View PDF file
The final report is available as:
L. Davidson, D. Cokljat, J. Fröhlich, M.A. Leschziner, C. Mellen and W. Rodi (eds.), "LESFOIL: Large Eddy Simulation of Flow Around a High Lift Airfoil", Notes on Numerical Fluid Mechanics, Vol. 83, Springer Verlag, 2003.
Get the book at Springer in Europe or U.S.
REFERENCES (CHALMERS' WORK)
This page, Large eddy Simulation of Flow Around Airfoils (LESFOIL): A Brite-Euram Project, should be part of a frames system at www.tfd.chalmers.se/~lada/projects/proind.html