Coupled delayed-detached-eddy simulation and structural vibration of a self-oscillating cylinder due to vortex-shedding

The flow past a rigid-fixed cylinder and a self-oscillating cylinder is simulated at Re=5000. The finite-volume based CFD package OpenFOAM is used for flow computations for a rigid-fixed cylinder. Extensive mesh convergence and time-step studies are conducted for a cylinder span of 2D (twice the dia...

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Bibliographic Details
Published in:Journal of fluids and structures 2014-07, Vol.48, p.216-234
Main Authors: Lee, Abe H., Campbell, Robert L., Hambric, Stephen A.
Format: Article
Language:English
Subjects:
Computation
Computational fluid dynamics
Computer simulation
Correlation
Cylinders
DDES
Finite element method
Fluid flow
FSI
Lock-in
Mathematical models
Vortex-induced vibration (VIV)
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Summary:The flow past a rigid-fixed cylinder and a self-oscillating cylinder is simulated at Re=5000. The finite-volume based CFD package OpenFOAM is used for flow computations for a rigid-fixed cylinder. Extensive mesh convergence and time-step studies are conducted for a cylinder span of 2D (twice the diameter). Spanwise-pressure correlations and spectral calculations are conducted using longer cylinder span lengths: 4D, 8D and 16D. As the cylinder span size increases, better spanwise correlations are obtained. For a self-oscillating cylinder, the numerical approach that tightly couples DDES and FEA based on a fixed point iteration is used to predict the amplitude response and drag in a lock-in condition. The results of the rigid-fixed and self-oscillating cylinder computations compare favorably with experimental data.
ISSN:0889-9746
1095-8622
DOI:10.1016/j.jfluidstructs.2014.02.019