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Arrangement plan of buoyancy modules for the stable operation of the flexible riser in a deep-seabed mining system

Authors
Oh, J.-W.Min, C.-H.Lee, C.-H.Hong, S.Bae, D.-S.Lim, J.-H.Kim, H.-W.
Issue Date
2015
Publisher
Korea Ocean Research and Development Institute
Keywords
Arrangement plan; Buoyancy module; Deep-seabed mining system; Flexible riser; Multi-body dynamics
Citation
Ocean and Polar Research, v.37, no.2, pp 119 - 125
Pages
7
Journal Title
Ocean and Polar Research
Volume
37
Number
2
Start Page
119
End Page
125
URI
https://www.kriso.re.kr/sciwatch/handle/2021.sw.kriso/8609
DOI
10.4217/OPR.2015.37.2.119
ISSN
1598-141X
2234-7313
Abstract
This paper focuses on the efficient arrangement plan of buoyancy modules, which plan is used to secure the safe operation and structural stability of a marine riser. The marine riser is connected between a vessel and seabed devices. The movement of the vessel and the seabed devices are affected by the motion of the riser. The riser of a deep-seabed integrated mining system exerts a strong influence on the healthy transfer of minerals. So, buoyancy modules must be equipped to compensate for the problem which is the structure stability and the dynamic motion. Installation locations and quantities of the buoyancy modules are determined by real sea experiments. But this is not easy to do because in real sea experimental conditions the cost is expensive as well as being, time-consuming and dangerous. Therefore, the locations and quantities should be determined by numerical simulation. This method is called simulation-based design. The dynamic analysis models of the riser and the buoyancy modules are built into the commercial software of DAFUL. ? 2015 Korea Ocean Research and Development Institute. All rights reserved.
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