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Design and Automated Optimization of an Internal Turret Mooring System in the Frequency and Time Domain

Authors
Park, HongraeJung, Sungjun
Issue Date
6월-2021
Publisher
MDPI
Keywords
mooring analysis; turret mooring; design optimization; FPSO; design cycle automation
Citation
JOURNAL OF MARINE SCIENCE AND ENGINEERING, v.9, no.6
Journal Title
JOURNAL OF MARINE SCIENCE AND ENGINEERING
Volume
9
Number
6
URI
https://www.kriso.re.kr/sciwatch/handle/2021.sw.kriso/9555
DOI
10.3390/jmse9060581
ISSN
2077-1312
2077-1312
Abstract
A cost-effective mooring system design has been emphasized for traditional offshore industry applications and in the design of floating offshore wind turbines. The industry consensus regarding mooring system design is mainly inhibited by previous project experience. The design of the mooring system also requires a significant number of design cycles. To take aim at these challenges, this paper studies the application of an optimization algorithm to the Floating Production Storage and Offloading (FPSO) mooring system design with an internal turret system at deep-water locations. The goal is to minimize mooring system costs by satisfying constraints, and an objective function is defined as the minimum weight of the mooring system. Anchor loads, a floating body offset and mooring line tensions are defined as constraints. In the process of optimization, the mooring system is analyzed in terms of the frequency domain and time domain, and global and local optimization algorithms are also deployed towards reaching the optimum solution. Three cases are studied with the same initial conditions. The global and local optimization algorithms successfully find a feasible mooring system by reducing the mooring system cost by up to 52%.
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Jung, Sung Jun
친환경해양개발연구본부 (심해공학연구센터)
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