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China Ocean Engineering

, Volume 32, Issue 5, pp 570–581 | Cite as

Hydrodynamics of A Flexible Riser Undergoing the Vortex-Induced Vibration at High Reynolds Number

  • Tie Ren
  • Meng-meng Zhang
  • Shi-xiao Fu
  • Lei-jian Song
Article
  • 11 Downloads

Abstract

This study proposed a method to obtain hydrodynamic forces and coefficients for a flexible riser undergoing the vortex-induced vibration (VIV), based on the measured strains collected from the scale-model testing with the Reynolds numbers ranging from 1.34E5 to 2.35E5. The riser is approximated as a tensioned spatial beam, and an inverse method based on the FEM of spatial beam is adopted for the calculation of hydrodynamic forces in the cross flow (CF) and inline (IL) directions. The drag coefficients and vortex-induced force coefficients are obtained through the Fourier Series Theory. Finally, the hydrodynamic characteristics of a flexible riser model undergoing the VIV in a uniform flow are carefully investigated. The results indicate that the VIV amplifies the drag coefficient, and the drag coefficient does not change with time when the CF VIV is stable. Only when the VIVs in the CF and IL directions are all steady vibrations, the vortex-induced force coefficients keep as a constant with time, and under “lock-in” condition, whether the added-mass coefficient changes with time or not, the oscillation frequency of the VIV keeps unchanged. It further shows that the CF excitation coefficients at high frequency are much smaller than those at the dominant frequency, while, the IL excitation coefficients are in the same range. The axial distributions of the excitation and damping region at the dominant frequency and high frequency are approximately consistent in the CF direction, while, in the IL direction, there exists a great difference.

Key words

flexible riser vortex-induced vibration vortex-induced force excitation coefficient added-mass coefficient drag coefficient 

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References

  1. API (American Petroleum Institute), 1998. Design of Risers for Floating Production Systems (FPSs) and Tension-Leg Platforms (TLPs), API RP 2RD, Washington, DC.Google Scholar
  2. Aronsen, K.H., 2007. An Experimental Investigation of In-line and Combined In-line and Cross-flow Vortex Induced Vibrations, Ph. D. Thesis, Norwegian University of Science and Technology, Trondheim, Norway.Google Scholar
  3. Chaplin, J.R., Bearman, P.W., Huera Huarte, F.J. and Pattenden, R.J., 2005. Laboratory measurements of vortex-induced vibrations of a vertical tension riser in a stepped current, Journal of Fluids and Structures, 21(1), 3–24.CrossRefGoogle Scholar
  4. Chen, H.C., Chen, C.R. and Mercier, R.S., 2007. CFD Simulation of Riser VIV, Minerals Management Service and Industry Consortium.CrossRefGoogle Scholar
  5. Dahl, J., 2008. Vortex-Induced Vibration of A Circular Cylinder with Combined In-line and Cross-Flow Motion, Ph. D. Thesis, Massachusetts Institute of Technology, Cambridge, MA, USA.Google Scholar
  6. Evangelinos, C., Lucor, D. and Karniadakis, G.E., 2000. DNS-derived force distribution on flexible cylinders subject to vortex-induced vibration, Journal of Fluids and Structures, 14(3), 429–440.CrossRefGoogle Scholar
  7. Fang, S.M., Niedzwecki, J.M., Fu, S.X., Li, R.P. and Yang, J.M., 2014. VIV response of a flexible cylinder with varied coverage by buoyancy elements and helical strakes, Marine Structures, 39), 70–89.CrossRefGoogle Scholar
  8. Fu, S.X., Ren, T., Li, R.P. and Wang, X.F., 2011. Experimental Investigation on VIV of the Flexible Model Within Full Scale Re Number Regime, OMAE2011-49042.Google Scholar
  9. Gopalkrishnan, R., 1993. Vortex-Induced Forces on Oscillating Bluff Cylinders, Ph. D. Thesis, Massachusetts Institute of Technology, Cambridge, MA, USA.Google Scholar
  10. Huera Huarte, F.J., 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, Journal of Fluids and Structures, 22(6–7), 897–903.CrossRefGoogle Scholar
  11. Humphries, J.A. and Walker, D.H., 1988. Vortex-excited response of large-scale cylinders in sheared flow, Journal of Offshore Mechanics and Arctic Engineering, 110(3), 272–277.CrossRefGoogle Scholar
  12. Kaiktsis, L., Triantafyllou, G.S. and Özbas, M., 2007. Excitation, inertia, and drag forces on a cylinder vibrating transversely to a steady flow, Journal of Fluids and Structures, 23(1), 1–21.Google Scholar
  13. Li, L., 2012. Investigation on Vortex-Induced-Vibration of Flexible Risers with Buoyancy Modules, MSc. Thesis, Shanghai Jiao Tong University, Shanghai, China. (in Chinese)Google Scholar
  14. Lie, H. and Kaasen, K.E., 2006. Modal analysis of measurements from a large-scale VIV model test of a riser in linearly sheared flow, Journal of Fluids and Structures, 22(4), 557–575.CrossRefGoogle Scholar
  15. Liu, Z.G., Liu, Y. and Lu, J., 2012. Numerical simulation of the fluid–structure interaction for an elastic cylinder subjected to tubular fluid flow, Computers & Fluids, 68), 192–202.MathSciNetCrossRefzbMATHGoogle Scholar
  16. Marcollo, H. and Hinwood, J.B., 2006. On shear flow single mode lock-in with both cross-flow and in-line lock-in mechanisms, Journal of Fluids and Structures, 22(2), 197–211.CrossRefGoogle Scholar
  17. Mekha, B.B., 2001. New frontiers in the design of steel catenary risers for floating production systems, Journal of Offshore Mechanics and Arctic Engineering, 123(4), 153–158.CrossRefGoogle Scholar
  18. Mukundan, H., 2008. Vortex-Induced Vibration of Marine Risers: Motion and Force Reconstruction from Field and Experimental Data, Ph. D. Thesis, Massachusetts Institute of Technology, Cambridge, MA, USA.Google Scholar
  19. Sarpkaya, T., 1977. Transverse Oscillations of A Circular Cylinder in Uniform Flow, Part 1, Naval Postgraduate School, Monterey, CA, USA.CrossRefGoogle Scholar
  20. Sarpkaya, T., 1978. Fluid Forces on Oscillating Cylinders, Naval Postgraduate School, Monterey, USA, 275–290.Google Scholar
  21. Sarpkaya, T., 2004. A critical review of the intrinsic nature of vortexinduced vibrations, Journal of Fluids and Structures, 19(4), 389–447.CrossRefGoogle Scholar
  22. Song, L.J., Fu, S.X., Cao, J., Ma, L.X. and Wu, J.Q., 2016a. An investigation into the hydrodynamics of a flexible riser undergoing vortexinduced vibration, Journal of Fluids and Structures, 63), 325–350.CrossRefGoogle Scholar
  23. Song, L.J., Fu, S.X., Zeng, Y.D. and Chen, Y.F., 2016b. Hydrodynamic forces and coefficients on flexible risers undergoing vortex-induced vibrations in uniform flow, Journal of Waterway, Port, Coastal, and Ocean Engineering, 142(4), 04016001–1–04016001–15.CrossRefGoogle Scholar
  24. Soni, P.K., 2008. Hydrodynamic Coefficients for Vortex-Induced Vibrations of Flexible Beams, Ph. D. Thesis, Norwegian University of Science and Technology, Trondheim, Norway.Google Scholar
  25. Sumer, B.M. and Fredsoe, J., 2006. Hydrodynamics Around Cylindrical Structures, Technical University of Denmark, Denmark, 334–413.zbMATHGoogle Scholar
  26. Vandiver, J.K., 1983. Drag coefficients of long flexible cylinders, Proceedings of Offshore Technology Conference, Houston, TX, USA.Google Scholar
  27. Vandiver, J.K., Jaiswal, V. and Jhingran, V., 2009. Insights on vortexinduced. traveling waves on long risers, Journal of Fluids and Structures, 25(4), 641–653.CrossRefGoogle Scholar
  28. Willden, R.H.J. and Graham, J.M.R., 2004. Multi-modal vortex-induced vibrations of a vertical riser pipe subject to a uniform current profile, European Journal of Mechanics-B/Fluids, 23(1), 209–218.CrossRefzbMATHGoogle Scholar
  29. Wu, J., Lie, H., Larsen, C.M., Liapis, S. and Baarholm, R., 2016. Vortex-induced vibration of a flexible cylinder: interaction of the in-line and cross-flow responses, Journal of Fluids and Structures, 63), 238–258.CrossRefGoogle Scholar
  30. Yamamoto, C.T., Meneghini, J.R., Saltara, F., Fregonesi, R.A. and Ferrari Jr., J.R., 2004. Numerical simulations of vortex-induced vibration on flexible cylinders, Journal of Fluids and Structures, 19(4), 467–489.CrossRefGoogle Scholar
  31. Yin, D.C. and Larsen, C.M., 2010. On determination of VIV coefficients under shear flow condition, Proceedings of the 29th International Conference on Ocean, Offshore and Arctic Engineering, Ocean, Offshore and Arctic Engineering Division, Shanghai, China.Google Scholar
  32. Zhao, P.L., Wang, J.S., Jiang, S.Q. and Xu, L.B., 2010. Numerical simulation of fluid-structural interaction for vortex-induced vibration of risers, Ocean Technology, 29(3), 73–77. (in Chinese)Google Scholar

Copyright information

© Chinese Ocean Engineering Society and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Tie Ren
    • 1
    • 2
    • 3
  • Meng-meng Zhang
    • 1
    • 2
  • Shi-xiao Fu
    • 1
    • 2
  • Lei-jian Song
    • 4
  1. 1.State Key Laboratory of Ocean EngineeringShanghai Jiao Tong UniversityShanghaiChina
  2. 2.Collaborative Innovation Centre for Advanced Ship and Deep-Sea ExplorationShanghaiChina
  3. 3.Marine Design & Research Institute of ChinaShanghaiChina
  4. 4.Shanghai Electric Wind Power GroupShanghaiChina

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