TY - GEN
T1 - Efficient modeling of generalized aerodynamic forces across mach regimes using neuro-fuzzy approaches
AU - Winter, Maximilian
AU - Breitsamter, Christian
N1 - Publisher Copyright:
© Springer International Publishing Switzerland 2016.
PY - 2016
Y1 - 2016
N2 - In the presentwork, a nonlinear reduced-order modeling (ROM) approach based on dynamic local linear neuro-fuzzy models is presented for predicting unsteady aerodynamic loads in the time domain. In order to train the input-output relationship between the structural motion and the corresponding flow-induced loads, the local linear model tree (LOLIMOT) algorithm has been implemented. Furthermore, the Mach number is incorporated as an additional input parameter to account for different free-stream conditions with a single model. The approach is applied to the AGARD 445.6 configuration in order to demonstrate the efficiency and fidelity of the proposed method. It is indicated that the ROM-based time domain generalized aerodynamic forces (GAFs) show good agreement with the respective full-order CFD solution (AER-Eu). A further comparison in the frequency domain confirms the validity of the approach. Moreover, the potential of the method for reducing the numerical effort of aeroelastic analyses is highlighted.
AB - In the presentwork, a nonlinear reduced-order modeling (ROM) approach based on dynamic local linear neuro-fuzzy models is presented for predicting unsteady aerodynamic loads in the time domain. In order to train the input-output relationship between the structural motion and the corresponding flow-induced loads, the local linear model tree (LOLIMOT) algorithm has been implemented. Furthermore, the Mach number is incorporated as an additional input parameter to account for different free-stream conditions with a single model. The approach is applied to the AGARD 445.6 configuration in order to demonstrate the efficiency and fidelity of the proposed method. It is indicated that the ROM-based time domain generalized aerodynamic forces (GAFs) show good agreement with the respective full-order CFD solution (AER-Eu). A further comparison in the frequency domain confirms the validity of the approach. Moreover, the potential of the method for reducing the numerical effort of aeroelastic analyses is highlighted.
UR - https://www.scopus.com/pages/publications/84975782911
U2 - 10.1007/978-3-319-27279-5_41
DO - 10.1007/978-3-319-27279-5_41
M3 - Conference contribution
AN - SCOPUS:84975782911
SN - 9783319272788
T3 - Notes on Numerical Fluid Mechanics and Multidisciplinary Design
SP - 467
EP - 477
BT - New Results in Numerical and Experimental Fluid Mechanics X - Contributions to the 19th STAB/DGLR, 2014
A2 - Dillmann, Andreas
A2 - Krämer, Ewald
A2 - Heller, Gerd
A2 - Breitsamter, Christian
A2 - Wagner, Claus
PB - Springer Verlag
T2 - 19th Symposium on New Results in Numerical and Experimental Fluid Mechanics, DGLR/STAB
Y2 - 4 November 2014 through 5 November 2014
ER -