TY - GEN
T1 - Reduced order modeling of nonlinear transonic aerodynamics using a pruned volterra series
AU - Balajewicz, Maciej
AU - Nitzsche, Fred
AU - Feszty, Daniel
PY - 2009
Y1 - 2009
N2 - The following paper presents a reduced-order-modeling approach for nonlinear aerodynamic systems utilizing a pruned Volterra series. The method is applied to a two-dimensional transonic airfoil undergoing forced pitch oscillations. Pruned Volterra series reduced-order-models up to fourth-order are identified and compared against computational fluid dynamics models. Very favorable accuracies are attained over a wide range of Mach number, reduced frequency and oscillation amplitude. The computational resources associated with the pruned Volterra series are demonstrated to be several orders-of-magnitude lower compared to the standard Volterra series.
AB - The following paper presents a reduced-order-modeling approach for nonlinear aerodynamic systems utilizing a pruned Volterra series. The method is applied to a two-dimensional transonic airfoil undergoing forced pitch oscillations. Pruned Volterra series reduced-order-models up to fourth-order are identified and compared against computational fluid dynamics models. Very favorable accuracies are attained over a wide range of Mach number, reduced frequency and oscillation amplitude. The computational resources associated with the pruned Volterra series are demonstrated to be several orders-of-magnitude lower compared to the standard Volterra series.
UR - http://www.scopus.com/inward/record.url?scp=84855635284&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84855635284&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84855635284
SN - 9781563479731
T3 - Collection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
BT - 50th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
T2 - 50th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
Y2 - 4 May 2009 through 7 May 2009
ER -