Abstract
Formally, use of system identification techniques to estimate the forces acting on the beam may give information on hydrodynamic forces due to vortex-induced vibrations (VIVs), but no results from such attempts for submarine pipeline spans have been reported. In this study, a pipe model with a mass ratio (mass/displaced mass) of 2.62 is tested in a current tank. The gap ratios (gap to pipe diameter ratio) at the pipe ends are 2.0, 4.0, 6.0 and 8.0. The response of the model is measured using optical fiber strain gauges. A modal approach linked to a finite element method is used to estimate the hydrodynamic forces from measurement. The hydrodynamic force at the dominant response frequency is the major concern, and the lift force and added mass coefficients are calculated. Response calculations are performed using force coefficients from the inverse force analysis and the calculated results are in accordance with the experimental data.
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Khalak A, Williamson C H K. Fluid forces and dynamics of a hydroelastic structure with very low mass and damping [J]. Journal of Fluids and Structures, 1997, 11(8): 973–982.
Jauvtis N, Williamson C H K. The effect of two degrees of freedom on vortex-induced vibration at low mass and damping [J]. Journal of Fluid Mechanics, 2004, 509: 23–62.
Gopalkrishnan R. Vortex-induced forces on oscillating bluff cylinders [D]. Cambridge, USA: Department of Ocean Engineering, Massachusetts Institute of Technology, 1993.
Aronsen K H. An experimental investigation of inline and combined in-line and cross-flow vortex induced vibrations [D]. Trondheim, Norway: Department of Marine Technology, Norwegian University of Science and Technology, 2007.
Li X C, Wang Y X, Li G W, et al. Experimental investigation of vortex-induced vibrations of long free spans near seabed [J]. Science China: Technological Sciences, 2011, 54(3): 698–704.
Huarte F J H, Bearman P W, Chaplin J R. On the force distribution along the axis of a flexible circular cylinder undergoing multi-mode vortex-induced vibrations [J]. Journal of Fluids and Structures, 2006, 22(6–7): 897–903.
Wu J, Larsen C M. Hydrodynamic force identification from vortex induced vibration experiments with slender beams [C]// Proceedings of the 26th International Conference on Offshore Mechanics and Arctic Engineering. San Diego, USA: ASME, 2007: 753–760.
Wu J, Larsen C M, Kaasen K E. A new approach for identification of forces on slender beams subjected to vortex induced vibrations [C]// Proceedings of the 27th International Conference on Offshore Mechanics and Arctic Engineering. Estoril, Portugal: ASME, 2008: 779–788.
Maincon P, Barnardo C, Larsen C M. VIV force estimation using inverse FEM [C]// Proceedings of the 27th International Conference on Offshore Mechanics and Arctic Engineering. Estoril, Portugal: ASME, 2008: 673–681.
Wu J, Maincon P, Larsen C M, et al. VIV force identification using classical optimal control algorithm [C]//Proceedings of the 28th International Conference on Offshore Mechanics and Arctic Engineering. Honolulu, USA: ASME, 2009: 1–5.
Tang G Q, Lu L, Teng B, et al. Identification of hydrodynamic coefficients from experiment of vortexinduced vibration of slender riser model [J]. Science China: Technological Sciences, 2011, 54(7): 1894–1905.
Lie H, Kaasen K E. Modal analysis of measurements from a large-scale VIV model test of a riser in linearly sheared flow [J]. Journal of Fluids and Structures, 2006, 22(4): 557–575.
Guyan, R J. Reduction of stiffness and mass matrices [J]. AIAA Journal, 1965, 3(2): 380.
Vikestad K. Multi-frequency response of a cylinder subjected to vortex shedding and support motions [D]. Trondheim, Norway: Department of Marine Structures, Norwegian University of Science and Technology, 1998.
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Foundation item: the Science Fund for Creative Research Groups of the National Natural Science Foundation of China (No. 50921001), the National Natural Science Foundation of China (No. 41176072), the Scientific Research Fund of Hunan Provincial Education Department (No. 12C0030), and the Open Research Fund Program for Hunan Province Key Laboratory of Water, Sediment Sciences & Flood Hazard Prevention (No. 2012SS07)
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Li, Xc., Wang, Yx., Wang, Gy. et al. Identification of hydrodynamic forces on a flexible pipe near plane boundary subjected to vortex-induced vibrations. J. Shanghai Jiaotong Univ. (Sci.) 18, 44–53 (2013). https://doi.org/10.1007/s12204-013-1367-4
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DOI: https://doi.org/10.1007/s12204-013-1367-4