Experimental Study of Hydrodynamic Responses of Cylinder Floating Production and Storage Offloading in Short-Crested Waves

doi:10.16183/j.cnki.jsjtu.2022.239

Abstract

Abstract:

An experimental investigation is conducted to study the hydrodynamic responses of cylinder floating production storage and offloading (FPSO) subjected to heading short-crested waves of different spreading parameters. The motion response and mooring dynamics of cylinder FPSO are analyzed and the results are compared with those from the long-crested waves. The simulation experiment shows that the short-crested waves induce smaller surge motions and mooring tensions, but generate bigger sways and roll motions compared with those of the long-crested waves. There are statistically significant differences in hydrodynamics of cylinder FPSO between short-crested and long-crested waves. The research results provide important references for further study of short-crested waves and their interaction with ocean engineering structures.

Key words: short-crested wave, cylinder floating production storage and offloading (FPSO), hydrodynamic responses, marine structures

CLC Number:

P751

LI Jun, PENG Tao, ZHANG Jianhong, LU Wenyue. Experimental Study of Hydrodynamic Responses of Cylinder Floating Production and Storage Offloading in Short-Crested Waves[J]. Journal of Shanghai Jiao Tong University, 2023, 57(6): 653-658.

Figures/Tables 12

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参数	实型值	模型值
工艺甲板直径/m	90.0	1.500
主甲板直径/m	82.8	1.380
水线处直径/m	72.0	1.200
阻尼板外径/m	90.0	1.500
排水量/t	81369.0	0.368
吃水/m	18.5	0.308
垂荡固有周期/s	14.4	1.859
横摇固有周期/s	29.4	3.796
纵摇固有周期/s	29.7	3.834

工况	有义波高/m		谱峰周期/s		分布参数
工况	实型值	模型值	实型值	模型值	分布参数
SC01	4.8	0.08	10.1	1.3	5
SC02	4.8	0.08	10.1	1.3	10
SC03	4.8	0.08	10.1	1.3	15
LC04	4.8	0.08	10.1	1.3

工况	纵荡/ m	横荡/ m	垂荡/ m	横摇/ (°)	纵摇/ (°)	艏摇/ (°)
SC01	-9.90	-5.91	-1.05	-1.82	-3.60	0.56
SC02	-11.47	-4.24	-1.12	-1.64	-3.19	0.68
SC03	-10.75	3.31	-1.26	-1.49	-3.35	0.48
LC04	-12.65	1.50	-1.10	-0.70	-2.98	0.31

系泊缆	系泊缆最大张力/kN
系泊缆	SC01	SC02	SC03	LC04
#1	1666.31	1666.65	1653.72	1798.74
#2	1685.31	1685.42	1666.35	1788.42
#3	1671.01	1672.05	1661.19	1802.26
#4	1665.59	1664.94	1659.25	1792.67
#5	1825.52	1804.00	1832.48	1915.07
#6	1882.06	1855.11	1871.77	1943.94
#7	1836.80	1824.26	1838.76	1921.76
#8	1801.40	1798.50	1806.13	1929.46
#9	1863.13	1764.07	1728.38	1708.96
#10	1789.02	1707.40	1672.70	1714.28
#11	1776.56	1700.25	1665.39	1644.04
#12	1795.71	1707.54	1676.98	1642.18