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Ben Uwihanganye , Christiaan A. Adenya , Hiram M. Ndiritu

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Ben Uwihanganye1 , Christiaan A. Adenya2 , Hiram M. Ndiritu3
1. Department of Mechanical Engineering, Jomo Kenyatta University of Agriculture and Technology, Main campus Juja, Kenya
2. Department of Marine Engineering, Jomo Kenyatta University of Agriculture and Technology, Main campus Juja, Kenya
3. Department of Mechanical Engineering, Jomo Kenyatta University of Agriculture and Technology, Main campus Juja, Kenya

Uwihanganye, Ben, et al. "REVIEW OF NUMERICAL APPROACH USED IN THE OPTIMIZATION OF MOORING SYSTEMS FOR FLOATING STRUCTURES." IJETSI, vol. 3, no. 4, Sept.-Oct. 2018, pp. 201-335, Accessed Oct. 2018.
Uwihanganye, B., Adenya, C., & Ndiritu, H. (2018, September/October). REVIEW OF NUMERICAL APPROACH USED IN THE OPTIMIZATION OF MOORING SYSTEMS FOR FLOATING STRUCTURES. IJETSI, 3(4), 201-335. Retrieved from
Uwihanganye, Ben, Christiaan A. Adenya, and Hiram M. Ndiritu. "REVIEW OF NUMERICAL APPROACH USED IN THE OPTIMIZATION OF MOORING SYSTEMS FOR FLOATING STRUCTURES." IJETSI 3, no. 4 (September/October 2018), 201-335. Accessed October, 2018.

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This paper present a review on the technologies that are used in station-keeping of floating platforms, the numerical methods used to model the mooring system dynamics with environmental load of wind, current and wave force interaction. Furthermore the design and optimization of the mooring system is reviewed. The lumped mass model found to be preferred in commercial application over finite element and finite difference based on its simplicity and ability to capture the same physics as of high order model. It was reviewed that Finite difference would be better if its present nuances and numerical limitation are eliminated. It is notable that the mooring line damping contribute about eighty percent of the total moored system damping, hence its accurate prediction is critical during the design. The mooring line damping depends on the drag force, therefore poor selection of the drag coefficient will lead to wrong prediction of the amplitude of oscillation of the floater. During optimization of mooring system, it is seen that the use of genetic algorithms have become popular. They account for environmental load distribution, anchor holding capacity and mooring line properties such as materiel length and tension. Some gaps are presented at the end of this review paper including unclear relationship between mooring line damping and total tension and the surface roughness effect on drag coefficient of mooring line.