Establishment of a design study for comprehensive hydrodynamic optimisation in the preliminary stage of the ship design

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Aung, Myo Zin and Nazemian, Amin and Boulougouris, Evangelos and Wang, Haibin and Duman, Suleyman and Xu, Xue (2024) Establishment of a design study for comprehensive hydrodynamic optimisation in the preliminary stage of the ship design. Ships and Offshore Structures, 19 (6). pp. 793-806. ISSN 1754-212X (https://doi.org/10.1080/17445302.2023.2208500)

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Abstract

An automated practical multi-objective optimisation scheme is proposed for ship hull modification. A shift transformation and a self-blending method are sequentially performed based on resistance objectives at multi-design speeds. The Lackenby variation alters hull forms and produces initial designs. Subsequently, self-blending method combines obtained ships to cover design space. All processes are automated by MATLAB coding that connects the ©Maxsurf modeller and ©Maxsurf Resistance in the case of panel method resistance calculation. After whole shape optimisation, the platform defines ship portions in the stern and bow regions. Particularly, an approximation modelling Least-Square approach is investigated to construct a surrogate model. Optimisation results indicate 11.26% cost function reduction contributes to 16.23% resistance reduction at lower speed and 6.12% resistance reduction at higher speed for a passenger catamaran boat. Thus, the developed in-house optimisation code provides an optimal and cost-effective solution for hydrodynamic optimisation in the preliminary stage of ship design.

ORCID iDs

Aung, Myo Zin ORCID logoORCID: https://orcid.org/0000-0001-6370-0029, Nazemian, Amin ORCID logoORCID: https://orcid.org/0000-0001-6861-4488, Boulougouris, Evangelos ORCID logoORCID: https://orcid.org/0000-0001-5730-007X, Wang, Haibin ORCID logoORCID: https://orcid.org/0000-0002-3520-6856, Duman, Suleyman ORCID logoORCID: https://orcid.org/0000-0001-6502-5960 and Xu, Xue ORCID logoORCID: https://orcid.org/0000-0002-0901-0235;
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