Multimode vortex-induced vibration (VIV) of slender risers, respectively, in stepped and shear flows is explored by finite element simulations. Taking account of the interaction between fluid and structure, a hydrodynamic model is proposed and embedded into the finite element simulation so as to carry out dynamic response of multimode VIV in time-domain. Multimode VIV in both stepped and shear flow fields is examined. In the case of stepped flow, a semi-empirical formula of modal weight is given. In the case of shear flow, modal excitation region can be determined based on modal energy, and participating modes approximately distribute in scattering groups.

References

References
1.
Sarpkaya
,
T.
,
2004
, “
A Critical Review of the Intrinsic Nature of Vortex-Induced Vibration
,”
J. Fluids Struct. Mech.
,
19
(4), pp.
389
447
.
2.
Vandiver
,
J. K.
,
1993
, “
Dimensionless Parameters Important to the Prediction of Vortex-Induced Vibration of Long, Flexible Cylinders in Ocean Currents
,”
J. Fluids Struct.
,
7
(
5
), pp.
423
455
.
3.
Moe
,
G.
, and
Arntsen
,
O.
,
2001
, “
VIV Analysis of Risers by Complex Modes
,”
11th International Offshore and Polar Engineering Conference
, Vol.
3
, pp.
426
430
.
4.
Lyons
,
G. J.
, and
Patel
,
M. H.
,
1986
, “
A Prediction Technique for Vortex Induced Transverse Response of Marine Risers and Tethers
,”
J. Sound Vib.
,
111
(
3
), pp.
467
487
.
5.
Facchinetti
,
M. L.
,
de Langre
,
E.
, and
Biolley
,
F.
,
2004
, “
Vortex-Induced Traveling Waves Along a Cable
,”
Eur. J. Mech. B/Fluids
,
23
(1), pp.
199
208
.
6.
Huarte
,
F. J. H.
,
Bearman
,
P. W.
, and
Chaplin
,
J. R.
,
2006
, “
On the Force Distribution Along the Axis of a Flexible Circular Cylinder Undergoing Multi-Mode Vortex-Induced Vibrations
,”
J. Fluids Struct.
,
22
(
6–7
), pp.
897
903
.
7.
Huse
,
E.
,
Kleiven
,
G.
, and
Nielsen
,
F. G.
,
1998
, “
Large Scale Model Testing of Deep Sea Risers
,”
Offshore Technology Conference
, Houston, TX, May 4–7, Paper No. OTC 8701.
8.
Huse
,
E.
,
Kleiven
,
G.
, and
Nielsen
,
F. G.
,
1999
, “
VIV-Induced Axial Vibration on Deep Sea Risers
,”
Offshore Technology Conference
, Houston, TX, May 3–6, Paper No. OTC 10932.
9.
Grant
,
R.
,
Litton
,
R.
,
Finn
,
L.
,
Maher
,
J.
, and
Lambrakos
,
K.
,
2000
, “
Highly Compliant Rigid Risers: Field Test Benchmarking a Time Domain VIV Algorithm
,”
Offshore Technology Conference
, Houston, TX, May 1–4, Paper No. OTC 11995.
10.
Dong
,
S.
, and
Karniadakis
,
G. E.
,
2005
, “
DNS of Flow Past a Stationary and Oscillating Cylinder at Re = 10,000
,”
J. Fluids Struct.
,
20
(
4
), pp.
519
531
.
11.
Yamamoto
,
C. T.
,
Meneghini
,
J. R.
, and
Saltara
,
F.
,
2004
, “
Numerical Simulations of Vortex-Induced Vibration on Flexible Cylinders
,”
J. Fluids Struct.
,
19
(
4
), pp.
467
489
.
12.
Vandiver
,
J. K.
,
2002
, “
A Universal Reduced Damping Parameter for Prediction of Vortex-Induced Vibration
,”
ASME
Paper No. OMAE2002-28292.
13.
Lie
,
H.
, and
Kaasen
,
H. K.
,
2006
, “
Model Analysis of Measurements From a Large-Scale VIV Model Test of a Riser in Linearly Sheared Flow
,”
J. Fluid Struct.
,
22
(
4
), pp.
557
575
.
14.
Chen
,
W. M.
,
Zhang
,
L. W.
, and
Li
,
M.
,
2009
, “
Prediction of Vortex-Induced Vibration of Flexible Riser Using an Improved Wake-Oscillator Model
,”
ASME
Paper No. OMAE2009-79336.
15.
Trim
,
A. D.
,
Braaten
,
H.
, and
Lie
,
H.
,
2005
, “
Experimental Investigation of Vortex-Induced Vibration of Long Marine Risers
,”
J. Fluids Struct.
,
21
(
3
), pp.
335
361
.
16.
Chaplin
,
J. R.
,
Bearman
,
P. W.
,
Huarte
,
F. J. H.
, and
Pattenden
,
R. J.
,
2005
, “
Laboratory Measurements of Vortex-Induced Vibrations of a Vertical Tension Riser in a Stepped Current
,”
J. Fluids Struct.
,
21
(
1
), pp.
3
24
.
17.
Larsen
,
C. M.
,
Vikestad
,
K.
,
Yttervik
,
R.
, and
Passano
,
E.
,
2001
, “
Empirical Model for Analysis of Vortex Induced Vibrations-Theoretical Background and Case Studies
,”
ASME
Paper No. OMAE2001/OFT-1203.
18.
Park
,
H. I.
, and
Jung
,
D. H.
,
2002
, “
A Finite Element Method for Dynamic Analysis of Long Slender Marine Structures Under Combined Parametric and Forcing Excitations
,”
Ocean Eng.
,
29
(
11
), pp.
1313
1325
.
19.
Chen
,
W. M.
,
Li
,
M.
, and
Zheng
,
Z. Q.
,
2012
, “
Dynamic Characteristics and VIV of Deepwater Riser With Axially Varying Structural Properties
,”
Ocean Eng.
,
42
, pp.
7
12
.
20.
Khalak
,
A.
, and
Williamson
,
C. H. K.
,
1999
, “
Motions, Forces and Mode Transitions in Vortex-Induced Vibrations at Low Mass-Damping
,”
J. Fluids Struct.
,
13
(
7–8
), pp.
813
851
.
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