经典式Spar平台涡激运动与驰振特性的对比试验

doi:10.16183/j.cnki.jsjtu.2020.206

上海交通大学学报 ›› 2021, Vol. 55 ›› Issue (5): 497-504.doi: 10.16183/j.cnki.jsjtu.2020.206

所属专题：《上海交通大学学报》2021年12期专题汇总专辑；《上海交通大学学报》2021年“海洋科学与工程”专题

经典式Spar平台涡激运动与驰振特性的对比试验

张晨雅¹, 寇雨丰¹^,²(), 吕海宁¹^,², 肖龙飞¹^,², 刘明月¹^,²

1.上海交通大学海洋工程国家重点实验室, 上海 200240
2.三亚崖州湾深海科技研究院, 海南三亚 572024

收稿日期:2020-07-01 出版日期:2021-05-28 发布日期:2021-06-01
通讯作者: 寇雨丰 E-mail:kouyufeng@sjtu.edu.cn
作者简介:张晨雅(1996-),女,浙江省嘉兴市人,硕士生,从事海洋工程水动力学研究
基金资助:
国家自然科学基金重点项目(52031006);国家自然科学基金青年科学基金项目(51909158);国家重点研发计划(2018YFC0309700)

Comparative Test of Characteristics of Vortex-Induced Motion and Galloping of Classic Spar Platform

ZHANG Chenya¹, KOU Yufeng¹^,²(), LÜ Haining¹^,², XIAO Longfei¹^,², LIU Mingyue¹^,²

1. State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
2. SJTU-Sanya Yazhou Bay Institute of Deepsea Science and Technology, Sanya 572024, Hainan, China

Received:2020-07-01 Online:2021-05-28 Published:2021-06-01
Contact: KOU Yufeng E-mail:kouyufeng@sjtu.edu.cn

摘要/Abstract

摘要：

为研究经典式Spar平台的涡激运动和驰振特性,开展了平台在系泊状态下的水池模型试验,分析不同流速作用下Spar平台的横荡运动特性,并通过对比仅流、仅波浪与波流耦合工况试验结果,分析波流耦合作用对Spar平台涡激运动和驰振运动性能的影响.结果表明:高折合速度的海流使得Spar平台发生驰振运动,相比涡激运动,其振荡周期更长、振幅更大,且具有随机性.波流耦合作用不会改变Spar平台流致运动的具体模式,但是显著影响流致运动的幅值.

关键词: 单柱式平台, 涡激运动, 驰振, 模型试验, 海洋工程水动力学

Abstract:

In order to study the characteristics of vortex-induced motion and galloping of the classic Spar platform, a model test with a mooring system is conducted in basin. The sway motion characteristics of the Spar platform at different current velocities are analyzed. By comparing the results in currents, waves, and wave-current coupled conditions, the coupling effects of current and wave on vortex-induced motion and galloping of the Spar platform are also studied. The results show that galloping is induced by the currents with high reduced velocities. Compared with the vortex-induced motion, the galloping phenomenon has a longer period, larger amplitude, and randomness. The coupling of current and wave would not change the mode of flow-induced motion, but it significantly affects the motion amplitude.

Key words: Spar platform, vortex-induced motion, galloping, model test, hydrodynamics of marine engineering

中图分类号:

P751

张晨雅, 寇雨丰, 吕海宁, 肖龙飞, 刘明月. 经典式Spar平台涡激运动与驰振特性的对比试验[J]. 上海交通大学学报, 2021, 55(5): 497-504.

ZHANG Chenya, KOU Yufeng, LÜ Haining, XIAO Longfei, LIU Mingyue. Comparative Test of Characteristics of Vortex-Induced Motion and Galloping of Classic Spar Platform[J]. Journal of Shanghai Jiao Tong University, 2021, 55(5): 497-504.

图/表 13

图1

表1

图2

图3

表2

图4

图5

表3

Spar平台在流作用下的运动响应幅值

U_r	横荡		纵荡
U_r	$A D max$	$A D nom$	$A D max$	$A D nom$
9.3	0.0948	0.0490	0.0749	0.0291
22.8	0.4914	0.2526	0.2535	0.1224
25.6	0.5109	0.2783	0.2089	0.0899

表3

图6

表4

一年一遇流、波浪及波流耦合作用下平台横荡幅值

工况	横荡
工况	$A D max$	$A D nom$
流(V_c=0.73 m/s)	0.0948	0.0490
波浪(H_s=8.7 m)	0.0760	0.0365
波流耦合(H_s=8.7 m, V_c=0.73 m/s)	0.2071	0.1124

表4

图7

表5

高海况流、波浪及波流耦合作用下平台横荡幅值

工况		横荡
工况		$A D max$	$A D nom$
百年一遇	流(V_c=1.79 m/s)	0.4914	0.2526
	波浪(H_s=15 m)	0.1156	0.0568
	波流耦合(H_s=15 m, V_c=1.79 m/s)	1.1292	0.6111
千年一遇	流(V_c=2.01 m/s)	0.5109	0.2783
	波浪(H_s=18 m)	0.1518	0.0608
	波流耦合(H_s=18 m, V_c=2.01 m/s)	1.5295	0.6089

表5

图8

参考文献 14

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参数	实际值	模型值
直径/m	34.1	0.568
中央井尺寸/m	12.8	0.213
螺旋侧板高度/m	4.44	0.074
吃水/m	198.1	3.302
干舷/m	16.8	0.280
立柱总高度/m	214.9	3.582
总排水量/t	174598	0.7886
垂向重心高度/m	87.78	1.463
横摇惯性半径/m	75.1	1.252
纵摇惯性半径/m	75.2	1.253
首摇惯性半径/m	16.8	0.280

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经典式Spar平台涡激运动与驰振特性的对比试验

Comparative Test of Characteristics of Vortex-Induced Motion and Galloping of Classic Spar Platform

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编号	有义波高 H_s/m	谱峰周期 T_p/s	谱峰因子γ	表层流速 V_c/(m·s^-1)	备注
1	8.7	12.3	2.6		一年一遇
2	8.7	12.3	2.6	0.73	一年一遇
3	15	17	3.55		百年一遇
4	15	17	3.55	1.79	百年一遇
5	18	22	4		千年一遇
6	18	22	4	2.01	千年一遇