TY - JOUR
T1 - A reduced-order model for the lift coefficient on a transversely oscillating cylinder
AU - Hajj, Muhammad R.
AU - Qin, Lihai
PY - 2005
Y1 - 2005
N2 - A consistent approach for the development of reduced-order models for the lift coefficient on a circular cylinder undergoing forced transverse oscillations is presented. Higher-order spectral analysis is applied to RANS-generated data to characterize the nonlinear couplings in the time series. Based on this analysis, it is shown that the forced van der Pol equation should be used to model the lift coefficient on the transversely oscillating cylinder. Analysis for three cases of forced excitations, namely resonance and no resonance with soft and hard excitations, is presented. Spectral parameters derived from spectral analysis of the RANS data are combined with approximate solutions of the representative model to determine its parameters. Model validation is achieved by comparing time and frequency domain characteristics of data obtained from the forced van der Pol equation with the RANS data.
AB - A consistent approach for the development of reduced-order models for the lift coefficient on a circular cylinder undergoing forced transverse oscillations is presented. Higher-order spectral analysis is applied to RANS-generated data to characterize the nonlinear couplings in the time series. Based on this analysis, it is shown that the forced van der Pol equation should be used to model the lift coefficient on the transversely oscillating cylinder. Analysis for three cases of forced excitations, namely resonance and no resonance with soft and hard excitations, is presented. Spectral parameters derived from spectral analysis of the RANS data are combined with approximate solutions of the representative model to determine its parameters. Model validation is achieved by comparing time and frequency domain characteristics of data obtained from the forced van der Pol equation with the RANS data.
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U2 - 10.2514/6.2005-2299
DO - 10.2514/6.2005-2299
M3 - Conference article
AN - SCOPUS:28844482347
SN - 0273-4508
VL - 9
SP - 6151
EP - 6162
JO - Collection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
JF - Collection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
T2 - 46th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
Y2 - 18 April 2005 through 21 April 2005
ER -