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Evaluation of CFD methods for transport aircraft high lift systems

Published online by Cambridge University Press:  03 February 2016

R. Rudnik ,
P. Eliasson  and
J. Perraud
R. Rudnik
Affiliation:
DLR, German Aerospace Center, Institute of Aerodynamics and Flow Technologies, Braunschweig, Germany
P. Eliasson
Affiliation:
FOI, Swedish Defense Research Agency, Aeronautics Division, Stockholm, Sweden
J. Perraud
Affiliation:
ONERA, Office National d’Etudes et de Recherches Aerospatiales, CERT/DMAE, Toulouse, France
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Abstract

Major results and findings of the numerical work package of the European high lift programme EUROLIFT are outlined. The main objective of these studies is to validate and test numerical methods for the prediction of high lift flows for transport aircraft configurations. The activities comprise the assessment of current CFD methods for 3D flows, evaluation of means for code improvement, and transition prediction. All aspects are especially devoted to high lift flow problems. A general capability to predict maximum lift on a simplified wing/fuselage high lift configuration is demonstrated by a variety of different numerical approaches. In general, major shortcomings are the reliability and the accurate simulation of large separation areas and the turn-around time to compute 3D lift polars. Advanced turbulence modelling and numerical solver features, such as the preconditioning technique, show a potential to overcome these deficiencies. Promising results with respect to transition prediction were obtained on a swept high lift wing using a database method. The results obtained in the numerical activities represent major ingredients on the way to a consistent numerical approach for the simulation of transport aircraft high lift configurations including all maximum lift determining effects.

Type
Research Article
Information
The Aeronautical Journal , Volume 109 , Issue 1092 , February 2005 , pp. 53 - 64
Copyright
Copyright © Royal Aeronautical Society 2005 

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