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

页码：155 / 163

页数：9

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