22nd Congress of International Council of the Aeronautical Sciences, Harrogate, UK, 28 August - 1st September, 2000
Paper ICAS 2000-4.8.2

COUPLED STEADY AND UNSTEADY AEROELASTIC SIMULATIONS IN THE TRANSONIC FLIGHT REGIME

M. Stettner, W. Haase, A. Eberle, J. Grashof, M. Schneider
DaimlerChrysler Aerospace AG, Military Aircraft, Germany

Keywords: aeroelasticity, cfd, fluid-structure coupling, mesh deformation, parallel processes

In design processes involving aeroelasticity problems, linear aerodynamic methods are most frequently used in industry. However, in the case of transonic and/or high-angle-of-attack flow, the critical and non-linear flow phenomena are not captured, hence the obtained interdisciplinary, aeroelasticity results are incorrect. In the present paper the status of effort, needed to close the fidelity gap between aerodynamics and aeroelasticity by application of highly sophisticated techniques, is described, as there are parallel Euler and Navier-Stokes (CFD) solvers, mesh deformation algorithms, generic fluid-structure interfaces, and last but not least high-performance computing. Static and dynamic aeroelastic simulation results are presented for the X-31A research aircraft wing.

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