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Erschienen in:
2009 | OriginalPaper | Buchkapitel
Analyses on Vortex-Induced Vibration with Consideration of Streamwise Degree of Freedom
verfasst von : Changjiang He, Zhongdong Duan, Jinping Ou
Erschienen in: Computational Structural Engineering
Verlag: Springer Netherlands
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By applying overlapping mesh, this work simulated vortex-induced vibrations (VIV) of low-mass-damping cylinder. Because of no need to re-mesh on the whole computational domain, but to find donors for nodes on the boundary of sub-domain, time and CPU resources were saved dramatically. We found that the transverse amplitudes increased by approximately 30% in the resonance area when took streamwise degree of freedom into account. But the transverse amplitudes had no change outside of the resonance area. In the range
m
* = 1.0 ~ 40, the ratios of streamwise amplitudes to those of transverse increased as
m
* decreased, especially as
m
*<2.6, the ratios would be greater than around 10%; moreover, the phase angles between streamewise displacements and transverse displacements descended as
m
* ascended.