A. Dugeai

This paper details in a first part the current state of the aeroelastic module included in the new ONERA aerodynamic elsA code. This module is based on an object-oriented approach as the elsA code itself. It is written in both C and Fortran. This numerical tool is able to take into account several kinds of aeroelastic problems: unsteady forced harmonic oscillations, static and dynamic coupling. The paper focuses on the description of the numerical features involved in the resolution of unsteady forced harmonic motions simulations. The overall development environment of the elsA aeroelastic module is shortly described. Some new features of theses techniques and their integration in the elsA code are described in the paper. In a second part, a set of unsteady aeroelastic applications is presented. The first one is related to the ONERA/DLR cooperation program WIONA. This program intends to collect an experimental data base on steady and unsteady wing oscillating nacelle interactions. Numerical unsteady RANS simulations using the Spalart-Allmaras turbulence model are presented and discussed for pitch and yaw oscillations of the nacelle. Another unsteady RANS application details turbomachinery blades vibration aeroelastic simulations. Computational results of the numerical simulation of the aeroelastic response to a harmonic bending forced motion of a compressor fan blade are detailed. Finally, a preliminary study of the aeroelastic behaviour of a 3-dimensional wing trailing edge flap is presented.

International Forum on Aeroelasticity and Structural Dynamics, 2005, München

Conference Paper

englisch

21,0 x 29,7 cm, 13 Seiten

DGLR-Bericht, 2005, 2005-04, International Forum on Aeroelasticity and Structural Dynamics 2005; S.1-13; 2005; Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V., Bonn

NA

in getr. Zählung;

transonic flows, aeroelasticity, structural dynamics, numerical methods, mesh deformation

Bibliothek

2005