共 33 条
Efficient discrete element simulation of managed ice actions on moored floating platforms
被引:16
|作者:
Pradana, Mochamad Raditya
[1
]
Qian, Xudong
[1
]
Ahmed, Aziz
[2
]
机构:
[1] Natl Univ Singapore, Dept Civil & Environm Engn, 1 Engn Dr 2, Singapore 117576, Singapore
[2] Univ Wollongong, Sch Civil Min & Environm Engn, Wollongong, NSW, Australia
基金:
新加坡国家研究基金会;
关键词:
Discrete element method;
Ice-structure interaction;
Managed ice;
Floating platforms;
Arctic;
BROKEN ICE;
MODEL TESTS;
NUMERICAL-MODEL;
LEVEL ICE;
LOADS;
TANKER;
COMPRESSION;
FIELD;
D O I:
10.1016/j.oceaneng.2019.106483
中图分类号:
U6 [水路运输];
P75 [海洋工程];
学科分类号:
0814 ;
081505 ;
0824 ;
082401 ;
摘要:
The current design standard lacks the detailed approach to estimate managed ice actions, which in turn forces the industry to rely on ice basin model tests and calibrated numerical simulations. To address the need for a reliable assessment of managed ice actions on large-scale floaters, this paper proposes an efficient two-dimensional discrete element simulation with polygonal elements, which integrates smoothly with a mooring system modeling and a hydrodynamic force representation. The study aims at establishing a range of numerical parameters suitable for managed ice, as well as the boundaries within which the two-dimensional assumption remains acceptable. The study includes validations against the empirical data on isolated ice impacts and the towing model test conducted in the Hamburg Ship Model Basin (HSVA), for which the discrete element simulations demonstrate reasonable agreements. Using this validated tool, this paper conducts a case study using a hypothetical floater based on the Kulluk, a heavily studied conical drilling platform with years of deployment in the Arctic. The study examines the effect of different ice and mooring characteristics on the simulated load, which provides insights on the design of floating platforms and its mooring systems for managed ice conditions.
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页数:17
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