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

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Abstract

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 2. D (twice the diameter). Spanwise-pressure correlations and spectral calculations are conducted using longer cylinder span lengths: 4. D, 8. D and 16. D. 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.

Original languageEnglish (US)
Pages (from-to)216-234
Number of pages19
JournalJournal of Fluids and Structures
Volume48
DOIs
StatePublished - Jan 1 2014

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering

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