Experimental study of vortex-induced vibration of a twin-tube submerged floating tunnel segment model

被引：49

作者：

Deng, Shi ^{[1
]}

Ren, Haojie ^{[2
,3
]}

Xu, Yuwang ^{[2
,3
]}

Fu, Shixiao ^{[1
,2
,3
]}

Moan, Torgeir ^{[1
,4
]}

Gao, Zhen ^{[1
,4
]}

机构：

[1] NTNU, Dept Marine Technol, NO-7491 Trondheim, Norway

[2] Shanghai Jiao Tong Univ, State Key Lab Ocean Engn, Shanghai 200030, Peoples R China

[3] Collaborat Innovat Ctr Adv Ship & Deep Sea Explor, Shanghai 200240, Peoples R China

[4] NTNU, Marine Technol Ctr, Ctr Ships & Ocean Struct, NO-7491 Trondheim, Norway

来源：

JOURNAL OF FLUIDS AND STRUCTURES | 2020年 / 94卷

关键词：

Submerged floating tunnel; Vortex-induced vibration; Response amplitude; Lift force; Torsional moment; 2; CIRCULAR-CYLINDERS; TANDEM ARRANGEMENT; FLOW; WAKE; FLUCTUATIONS; FORCES;

D O I：

10.1016/j.jfluidstructs.2020.102908

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The cross-flow vortex-induced vibration features of a submerged floating tunnel element, which is composed of two rigidly connected cylinders in a tandem configuration, were investigated via a self-oscillation model test in a steady flow. The Reynolds number ranged from 2x10(4) to 9x10(4), and the ratio of the center-to-center distance between the two cylinders and cylinder diameter varied within a range of 2-4. The vortex induced vibration responses and lift forces on the up- and downstream cylinders were studied under different spacing ratios and compared with those on a single cylinder. The results show that the spacing ratio plays an important role in VIV until the ratio reaches 4. For a small spacing ratio, a significant difference between the lift forces on the up- and downstream cylinders appears and induces a large torsional moment. For the convenience of engineering application, a torsional coefficient was proposed. The maximum torsional coefficient can reach 2.9, 1.2 and 0.98 for spacing ratios of 2, 3 and 4 at the reduced velocity of 5, respectively. Considering the vortex induced vibration responses as well as the torsional moment, a spacing ratio of 3 was recommended for tandem floating tunnel design. (C) 2020 Elsevier Ltd. All rights reserved.

引用

页数：16

共 28 条

[1] Fluctuating fluid forces acting on two circular cylinders in a tandem arrangement at a subcritical Reynolds number [J].