Optimisation of breakwaters design to protect offshore terminal area
Proceedings of the IASTED International Conference on Modelling, Simulation and Identification, MSI 2014
This paper addresses an optimisation problemof the design of detached breakwaters planned at offshore terminals. The approach aims to minimize the cost of the protection struc-ture where the wave height in the terminal area is consid-ered to be the main constraint. A genetic algorithm is used to solve the problem where the fitness function consists of the objective function penalised by the constraint function, both of themun-dimensioned. The coordinates of the nodes of the breakwater are considered to be the variables of op-timisation. The initial population is randomly generated in a way to have two segments breakwater. The hydrody-namicmodel used to calculate the fitness of each individual within the population is based on mild-slop equation. An extended and modified mild-slope equation is used to take dissipation and rapid change bathymetry parameters into consideration together with random multi-frequency inci-dent wave. The results are taken after attending a steady state of the fitness function.