均匀流下柔性立管涡激振动响应及涡激力载荷特性研究

摘要
图/表
参考文献(23)
相关文章 (3)

全文: PDF (1947 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要本文采用模型试验的方法研究了均匀流下柔性立管的涡激振动（VIV）响应特性及涡激力载荷特性。文中首先对均匀流场中柔性立管的VIV响应特性进行了分析，而后通过欧拉-伯努利梁动态响应控制方程和最小二乘法求取了柔性立管顺流向（IL）和横流向（CF）的涡激力系数。研究结果表明：均匀流下柔性立管的VIV为位移和主导频率不随时间变化的稳态响应，顺流向涡激振动的主导频率为横流向的2倍；柔性立管的激励系数与强迫振动试验获得的系数不一致：无因次频率处于激励区间的激励系数存在负值，激励系数不仅和无因次频率及无因次振幅相关，还与CF&IL方向位移相位角相关；在无因次频率0.13到0.22下，横流向的附加质量系数在1.5到3.0之间振荡变化；而顺流向的附加质量系数在无因次频率0.26到0.42的区间内从-1.0迅速增大到1.2后基本保持不变。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	宋磊建1
	2
	付世晓
	2
	任铁1
	2
	3
	于大鹏4
	张萌萌1
	2

关键词 ：柔性立管, 涡激振动；涡激力, 激励系数；附加质量系数

Abstract：In this study, the structural responses and vortex-induced forces of flexible risers undergoing vortex-induced vibration (VIV) in uniform flow were investigated. The VIV response characteristics are analyzed using the measured strains. Then, using the Euler Bernoulli beam structure dynamic equation and the least square method, the vortex-induced force coefficients in cross-flow (CF) and in-line (IL) direction were also be computed. The results indicate that that VIV of the flexible riser under uniform current is steady vibration with the amplitude and dominant frequency independent with time and the dominant frequency in the IL direction is twice as much as that in the CF direction. The excitation coefficients of flexible riser do not always agree with those obtained by the forced oscillation tests: some excitation coefficients are even negative within the usual defined exciting non-dimensional frequency regime, and are related with not only the non-dimensional frequency and amplitude but also phase angles of the CF&IL displacements. In the CF direction, when the non-dimensional frequency varies from 0.13 to 0.22, the added-mass coefficient oscillates between 1.5 and 3.0; In the IL direction, the added mass coefficient increases quickly from -1.0 to 1.2 and then keeps constantly when the non-dimensional frequency varies from 0.26 to 0.42.

Key words： Flexible riser Vortex-induced vibration Hydrodynamic force Excitation coefficient Added-mass coefficient

收稿日期: 2016-03-29 出版日期: 2017-11-15

引用本文:

宋磊建1,2，付世晓,2，任铁1,2,3，于大鹏4，张萌萌1,2. 均匀流下柔性立管涡激振动响应及涡激力载荷特性研究[J]. 振动与冲击, 2017, 36(22): 14-21.
Song Lei-Jian1, 2, Fu Shi-Xiao1,2, Ren Tie1,2,3, Yu Dapeng4, Zhang Mengmeng1,2. Structural responses and vortex-induced force of flexible risers undergoing vortex-induced vibration in uniform flow. JOURNAL OF VIBRATION AND SHOCK, 2017, 36(22): 14-21.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2017/V36/I22/14

[1] Marcolloa H., Hinwoodb 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, 197–211.
[2] B. Mutlu Sumer, Jergen F. 2006. Hydrodynamics around cylindrical structures. Technical University of 180 Denmark, Denmark: 334-413.
[3] Chaplin, J.R., Bearman, P.W., et al. 2005. Blind predictions of laboratory measurements of vortex-induced vibrations of a tension riser. Journal of Fluids and Structures. 21, 25 - 40.
[4] API RP 2RD. 1998. Design of Risers for Floating Production Systems (FPSs) and Tension Leg Platforms (TLPs). American Petroleum Institute, Washington, DC.
[5] Kaiktsis L., Triantafyllou G.s., and özbas. Ezcitation M. 2007. inertia, and drag forces on a cylinder vibrating transversely to a steady flow. Journal of Fluids and Structures. 23(1):1- 21.
[6] Sarpkaya, T. 2004. A critical review of the intrinsic nature of vortex-induced vibrations. Journal of Fluids and Structures. 19, 389- 447.
[7]Yamamoto CT, Meneghini JR, et al. 2005. Numerical simulations of vortex-induced vibration on flexible cylinders. Journal of Fluids and Structures.19, 467–89.
[8] Evangelinos C, Lucor D, Karniadakas GE. 2000. DNS-derived force distribution on flexible cylinders subject to vortex-induced vibration. Journal of Fluids and Structures. 14,429–40.
[9] Chen H, Huang K, Chen C, Richard S. Mercier. 2007. CFD Simulation of a Riser VIV. Final Project Report.
[10] Mukundan H. 2008. Vortex Induced Vibration and Force Reconstruction from Field and Experimental data. PhD thesis. Department of Ocean Engineering, Massachusetts Institute of Technology, Cambridge, MA,USA.
[11] Gopalkrishnan R.1993. Vortex-Induced Forces on Oscillating Bluff Cylinders. PhD thesis. Department of Ocean Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA.
[12] Huera-Huarte FJ, Bearman PW, Chaplin JR. 2006. On the force distribution along the axis of a flexible circular cylinder undergoing multi-mode vortex-induced vibrations. Journal of Fluids and Structures. 22:897–903.
[13] Wu J., Larsen C. M. and Kaasen K. E. 2008. A new approach for identification of forces on slender beams subjected to vortex induced vibrations. Proceedings of Offshore Mechanics and Arctic Engineering Conference 2008, OMAE 2008-57550, June 2008, Estoril, Portugal.
[14] Wu J., Mainon P., Larsen C. M. and Lie H. 2009. VIV force identification using classical optimal control algorithm. Proceedings of Offshore Mechanics and Arctic Engineering Conference 2009, OMAE2009- 79568, June 2009, Hawaii, USA.
[15] 陈铁云, 陈伯真. 1984. 船舶结构力学. 北京：国防工业出版社, 29-30.
Chen T, Chen B. 1984. Structural Mechanics for Ships. Beijing: National Defence Industry Press. 29-30.
[16] Li L, Fu S, Yang J, Ren T, and Wang, X. 2011. Experimental investigation on vortex-induced vibration of risers with staggered buoyancy. 30th OMAE, Rotterdam. OMAE2011-49046.
[17] Vikestad K., Vandiver J. K. and Larsen C. M. 2000. Added mass and oscillation frequency for circular cylinder subjected to VIV and external disturbance, Journal of Fluids and Structures 14, 1071-1088.
[18] Fu S, Ren T, Li R, Wang X. 2011. Experimental investigation on VIV of the flexible model within full scale Re number regime, OMAE2011-49042.
[19] Fang SM, Niedzwecki JM, Fu S, Li R, Yang J. 2014. VIV response of a flexible cylinder with varied coverage by buoyancy elements and helical strakes. Marine Structures. 39, 70-89.
[20] Vandiver J.K., Jaiswal V., Jhingran,V. 2009. Insights on vortex-induced, traveling waves on long risers. Journal of Fluids and Structures. 25,641–653.
[21] Larsen C.M., Yttervik R., Passano E. and Vikestad K. 2001. VIVANA Theory Manual. Version 3.1. Trondheim, Norway.
[22] Yin D, Larsen C.M. 2011. Experimental and numerical analysis of forced motion of a circular cylinder. Proceedings of Offshore Mechanics and Arctic Engineering Conference 2011, OMAE2011- 49438, June 2011, Rotterdam, The Netherlands.
[23] Aronsen, K.H. 2007. An Experimental Investigation of In-line and Combined In-line and Cross-flow Vortex Induced Vibrations, PhD Thesis, Department of Marine Technology, NTNU, Trondheim, Norway.