Phasing mechanisms between the in-line and cross-flow vortex-induced vibrations of a long tensioned beam in shear flow

被引：34
|
作者：
Bourguet, Remi [1 ,2 ]
Karniadakis, George Em [3 ]
Triantafyllou, Michael S. [4 ]
机构：
[1] Univ Toulouse, Inst Mecan Fluides Toulouse, F-31400 Toulouse, France
[2] CNRS, F-31400 Toulouse, France
[3] Brown Univ, Div Appl Math, Providence, RI 02912 USA
[4] MIT, Dept Mech Engn, Cambridge, MA 02139 USA
来源：
COMPUTERS & STRUCTURES | 2013年 / 122卷
关键词：
Vortex-induced vibrations; Mono- and multi-frequency responses; In-line/cross-flow response phasing; Lock-in in shear flow; Tensioned beam; Direct numerical simulation; LOW REYNOLDS-NUMBERS; MARINE RISERS; CYLINDERS; WAKE;
D O I：
10.1016/j.compstruc.2013.01.002
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
The mechanisms of phasing between the in-line and cross-flow vortex-induced vibrations of a cylindrical tensioned beam in non-uniform flow are studied by direct numerical simulation. Three types of responses are considered, mono-frequency, narrowband, and broadband multi-frequency vibrations; in all cases, in-line and cross-flow vibration components occurring with a frequency ratio of 2 are phase-locked within regions of wake-body synchronization. The in-line/cross-flow phase difference exhibits a persistent span-wise drift when vibration components present significant traveling-wave behavior; this drift depends linearly on the in-line/cross-flow wavenumber difference, controlled by the beam non-linear dispersion relation and also impacted by the effective added mass variability. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码：155 / 163
页数：9
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