Abstract
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.
| Original language | English |
|---|---|
| Pages (from-to) | 6151-6162 |
| Number of pages | 12 |
| Journal | Collection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference |
| Volume | 9 |
| DOIs | |
| State | Published - 2005 |
| Event | 46th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference - Austin, TX, United States Duration: 18 Apr 2005 → 21 Apr 2005 |
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