C. Braun, A. Boucke, J. Ballmann

This paper is concerned with the numerical simulation of the static aeroelastic deformation of a wind tunnel model and its effect on measured aerodynamic quantities. For this purpose, the aeroelastic method SOFIA is used, which is being developed in the frame of the collaborative research center SFB 401 at Aachen University. This method combines in a partitioned approach the Navier-Stokes solver FLOWer and a reduced structural model based on Timoshenkos beam theory to model the structural properties of the wing. For static aeroelastic computations, the solvers are called alternating in the sense of a block Gauss-Seidel iteration procedure until the complete aeroelastic system has achieved the state of equilibrium. Due to the application of a reduced structural model and a very efficient CFD-grid deformation algorithm, the aeroelastic analysis can be performed with almost the same computational cost as only the pure CFD computation. Results were computed for a wind tunnel model of a modern large transonic transport aircraft, which has been tested in the European Transonic Windtunnel (ETW) in the frame of the EU-project HiReTT. The dynamic pressures considered range from 50000 Pa up to 100000 Pa. The results reveal that the model deformation has to be accounted for in order to find a good correlation between CFD results and experimental data.

International Forum on Aeroelasticity and Structural Dynamics, 2005, München

Conference Paper

englisch

21,0 x 29,7 cm, 11 Seiten

DGLR-Bericht, 2005, 2005-04, International Forum on Aeroelasticity and Structural Dynamics 2005; S.1-11; 2005; Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V., Bonn

NA

in getr. Zählung;

aeroelasticity, wind tunnel models, fluid structure interaction

Bibliothek

2005