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Coupled analysis between catenary mooring and VLFS with structural hydroelasticity in waves

Coupled analysis between catenary mooring and VLFS with structural hydroelasticity in waves
Coupled analysis between catenary mooring and VLFS with structural hydroelasticity in waves
The rapid growth of marine renewables has led to the development of very large floating structures (VLFS) that are designed to operate in deep seas. It is significant to understand the mechanism of the coupled effects between deformable VLFS and catenary mooring system. This paper presents a time-domain hydro-elastic-moored model developed by integrating a quasi-static mooring module into a fully coupled Computational Fluid Dynamics (CFD) - discrete-module-beam (DMB) approach. The model is used to investigate the coupled effects between structural hydroelasticity and loose-type mooring systems on a deformable VLFS in waves. The mooring and hydroelasticity codes are validated separately and show favourable agreement with other numerical and experimental results. Then the coupled effects between the mooring system and structural hydroelasticity are evaluated by assigning various design parameters, i.e., VLFS structural stiffness and mooring stiffness. The numerical results, including dynamic motions, longitudinal vertical bending moments (VBMs) and mooring tension forces are presented and analysed. These results can be used to design a VLFS with mooring in medium-deep sea, and help with the conventional mooring design for a less-stiffness VLFS due to hydroelastic response.
0951-8339
Wei, Yujia
1334d051-7267-4469-8146-4b9d95a44776
Yu, Shuangrui
d6ce94d4-f359-464b-bb13-6c944aca8d7b
Jin, Peng
38155032-0b14-42e3-99e3-370c51fc1cbd
Huang, Luofeng
04d433a0-7285-4229-be93-4eedf10e230a
Elsherbiny, Khaled
757191dd-29ef-4d11-bbb6-0c983cee2e15
Tezdogan, Tahsin
7e7328e2-4185-4052-8e9a-53fd81c98909
Wei, Yujia
1334d051-7267-4469-8146-4b9d95a44776
Yu, Shuangrui
d6ce94d4-f359-464b-bb13-6c944aca8d7b
Jin, Peng
38155032-0b14-42e3-99e3-370c51fc1cbd
Huang, Luofeng
04d433a0-7285-4229-be93-4eedf10e230a
Elsherbiny, Khaled
757191dd-29ef-4d11-bbb6-0c983cee2e15
Tezdogan, Tahsin
7e7328e2-4185-4052-8e9a-53fd81c98909

Wei, Yujia, Yu, Shuangrui, Jin, Peng, Huang, Luofeng, Elsherbiny, Khaled and Tezdogan, Tahsin (2023) Coupled analysis between catenary mooring and VLFS with structural hydroelasticity in waves. Marine Structures, 93, [103516]. (In Press)

Record type: Article

Abstract

The rapid growth of marine renewables has led to the development of very large floating structures (VLFS) that are designed to operate in deep seas. It is significant to understand the mechanism of the coupled effects between deformable VLFS and catenary mooring system. This paper presents a time-domain hydro-elastic-moored model developed by integrating a quasi-static mooring module into a fully coupled Computational Fluid Dynamics (CFD) - discrete-module-beam (DMB) approach. The model is used to investigate the coupled effects between structural hydroelasticity and loose-type mooring systems on a deformable VLFS in waves. The mooring and hydroelasticity codes are validated separately and show favourable agreement with other numerical and experimental results. Then the coupled effects between the mooring system and structural hydroelasticity are evaluated by assigning various design parameters, i.e., VLFS structural stiffness and mooring stiffness. The numerical results, including dynamic motions, longitudinal vertical bending moments (VBMs) and mooring tension forces are presented and analysed. These results can be used to design a VLFS with mooring in medium-deep sea, and help with the conventional mooring design for a less-stiffness VLFS due to hydroelastic response.

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Unmarked revised manuscript - Accepted Manuscript
Restricted to Repository staff only until 8 September 2025.
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Accepted/In Press date: 8 September 2023

Identifiers

Local EPrints ID: 481969
URI: http://eprints.soton.ac.uk/id/eprint/481969
ISSN: 0951-8339
PURE UUID: 0542fd43-48a2-428f-ac09-0d3995c91f25
ORCID for Tahsin Tezdogan: ORCID iD orcid.org/0000-0002-7032-3038

Catalogue record

Date deposited: 14 Sep 2023 16:38
Last modified: 30 Oct 2024 03:05

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Contributors

Author: Yujia Wei
Author: Shuangrui Yu
Author: Peng Jin
Author: Luofeng Huang
Author: Khaled Elsherbiny
Author: Tahsin Tezdogan ORCID iD

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