Scenario based optimization of a container vessel with respect to its projected operating conditions

Numerical and experimental study on hydrodynamic bulbous bow hull-form optimization for various service conditions due to slow steaming of container vessel

“…What is more, various trim conditions are also considered for the hull form optimization design not only for the original contract speed F r = 0.255 but also for slow speeds F r = 0.163-0.183 due to slow steaming by Park et al 18 Through their studies, the identification of the optimum trim condition meeting the objectives of ship operator can be achieved. Several similar probabilistic approaches considering speed and other factors for increasing ship lifetime efficiency have been investigated by Kramer et al, 19 Wagner et al, 20 Motley and collegues, 21,22 Eljardt, 23 and Terziev et al 24 In this article, the specific information about the probability of occurrence of the various operative conditions for both speed and displacement during the lifetime of the design is first derived and analyzed and then involved in evaluating the objective function implemented within the optimization framework.…”

“…Filip et al 29 have conducted the ship bulb optimization transformation in terms of different operative conditions by computational fluid dynamics (CFD), where the result has shown nearly 7% power reduction. Such thinking mode has also been adopted and investigated by the work of Hirayama and Ando, 30 Chrismianto and Kim 31 and Wagner et al 20 This study employs some parameters that affect the dimension and form of the bulbous bow as the design variable to accomplish the distortion transformation of ship bulbous bow through the whole process of the hydrodynamic optimization considering the representative operational profile.…”