0
Research Papers: CFD and VIV

Features of Vortex-Induced Vibration in Oscillatory Flow

[+] Author and Article Information
Shixiao Fu

e-mail: shixiao.fu@sjtu.edu.cn

Jungao Wang

State Key Laboratory of Ocean Engineering,
Shanghai Jiao Tong University,
Shanghai, China

Rolf Baarholm

Statoil,
Trondheim, Norway

Jie Wu

Marintek,
Trondheim, Norway

C. M. Larsen

Department of Marine Technology,
Centre for Ships and Ocean Structures, NTNU,
Trondheim, Norway

1Corresponding author.

Contributed by the Ocean, Offshore, and Arctic Engineering Division of ASME for publication in the JOURNAL OF OFFSHORE MECHANICS AND ARCTIC ENGINEERING. Manuscript received April 23, 2013; final manuscript received October 3, 2013; published online November 28, 2013. Assoc. Editor: Wei Qiu.

J. Offshore Mech. Arct. Eng 136(1), 011801 (Nov 28, 2013) (10 pages) Paper No: OMAE-13-1041; doi: 10.1115/1.4025759 History: Received April 23, 2013; Revised October 03, 2013

Vortex-induced vibration (VIV) in oscillatory flow is experimentally investigated in the ocean basin. The test flexible cylinder was forced to harmonically oscillate in various combinations of amplitude and period with Keulegan-Carpenter (KC) number between 26 and 178 in three different maximum reduced velocities, URmax=4, URmax=6.5, and URmax=7.9 separately. VIV responses at cross-flow (CF) direction are investigated using modal decomposition and wavelet transformation. The results show that VIV in oscillatory flow is quite different from that in steady flow; features, such as intermittent VIV, hysteresis, amplitude modulation, and mode transition (time sharing) are observed. Moreover, a VIV developing process including “building-up,” “lock-in,” and “dying-out” in oscillatory flow, is further proposed and analyzed.

Copyright © 2014 by ASME
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Fig. 1

Overview of the whole experimental setup

Grahic Jump Location
Fig. 2

Simplified sketch of the setup

Grahic Jump Location
Fig. 3

Detailed view of the end connection

Grahic Jump Location
Fig. 4

Instrumentation of the model

Grahic Jump Location
Fig. 5

A sample result plot

Grahic Jump Location
Fig. 6

Typical VIV strain time history in oscillatory flow

Grahic Jump Location
Fig. 7

Typical VIV strain time history in steady flow

Grahic Jump Location
Fig. 8

Result of case (T = 16.5s,KC = 178) at CF4

Grahic Jump Location
Fig. 9

Result of case (T = 2.5s,KC = 31) at CF4

Grahic Jump Location
Fig. 10

Result of case (T = 10.2s,KC = 178) at CF4

Grahic Jump Location
Fig. 11

Result of case (T = 1.8s,KC = 31) at CF4

Grahic Jump Location
Fig. 12

Result of case (T = 8.45s,KC = 178) at CF4

Grahic Jump Location
Fig. 13

Result of case (T = 1.45s,KC = 31) at CF4

Grahic Jump Location
Fig. 14

Schematic diagram of obtaining A/D versus UR plot

Grahic Jump Location
Fig. 15

Hysteresis in case (T = 16.5s,KC = 178) at CF4

Grahic Jump Location
Fig. 16

Hysteresis in case (T = 10.2s,KC = 178) at CF4

Grahic Jump Location
Fig. 17

Hysteresis in case (T = 8.45s,KC = 178) at CF4

Grahic Jump Location
Fig. 18

VIV developing process of case (T = 16.5s,KC = 178) at CF4

Grahic Jump Location
Fig. 19

Time interval distribution of VIV developing process when URmax = 4

Grahic Jump Location
Fig. 20

VIV developing process of case (T = 10.2s,KC = 178) at CF4

Grahic Jump Location
Fig. 21

Time interval distribution of VIV developing process when URmax = 6.5

Grahic Jump Location
Fig. 22

VIV developing process of case (T = 8.45s,KC = 178) at CF2

Grahic Jump Location
Fig. 23

Time interval distribution of VIV developing process when URmax = 7.9

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In