Naslov
Numerical Simulation of Oscillating Wing Using Linear and Nonlinear CFD Methods

Autori
Majić, Frane

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
STAB / Heinemann, Hajo - Göttingen : Deutsches Zentrum für Luft- und Raumfahrt (DLR), 2006, 124-125

Skup
Strömung mit Ablösung

Mjesto i datum
Göttingen, Njemačka, 08.11.2005. - 11.11.2005

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
oscillating wing; TSD equation

Sažetak
The direct simulation of structure-fluid coupling in the time domain adopting the most precise modelling techniques needs extremely high computational effort. As the main effort is needed for the part of computing unsteady aerodynamic loads by RANS solvers, more efficient methods have been developed for the task of predicting only the flutter boundary. The aerodynamic part of the solution procedure then comprises the computation of unsteady aerodynamic flows around the aircraft structures performing oscillatory dynamic motions in different known elastic geometrical modes and with different frequencies. In this work this is very efficiently performed by two codes. First, the Transonic Doublet Lattice Method (TDLM) with importing of steady results from CFD code (Tau), and second by the CFD code for RANS equations (Tau). Steady results are imported into TDLM grid from unstructured grid which was not possible before. The interpolation between structured and unstructured grids was difficult and time consuming, due to the non-ordered character of the unstructured grid. For this purpose, fast interpolation method has been developed. In the work, procedure is applied to the AMP (Aeroelastisches Modellprogramm) wing, a wind tunnel model of a typical transport aircraft wing. The TDLM unsteady results are compared with Tau and experimental results.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo, Zrakoplovstvo, raketna i svemirska tehnika

POVEZANOST RADA