Parametric Design and Multiobjective Optimization of Containerships

Priftis, Alexandros; Papanikolaou, Apostolos; Plessas, Timoleon

doi:10.5957/jspd.32.3.150029

Cited by 2 publications

(1 citation statement)

References 6 publications

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“…Techniques used for creating and modifying hull forms can be classified into two major categories: fully-parametric models defined by Harries 1 and applied by researchers 6–9 or relying on one or more control polygon methodologies such as NURBS, B-Surface, and subdivision surfaces. 10–12 Fully parametric modelling techniques are generally more complex to construct, but more fast and robust with respect to geometric variations, allowing both global and local form changes.…”

Section: Introductionmentioning

confidence: 99%

Hydrodynamic optimization of a high-speed vessel by means of simulation-based design methodology

Timurlek

Şener

2022

Proceedings of the Institution of Mechanical Engineers, Part M:

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This study presents a simulation-based optimization procedure of a high-speed vessel. The presented procedure is applied on benchmark form Model 5365, a 1/8.25 scale model of the transom-stern, high-speed research vessel, R/V Athena. The procedure integrates parametric model generation, viscous numeric resistance analysis, and genetic algorithm evaluation. CAESES, a unique simulation-based design platform, is used to collect the process under one roof and handle the process automatically. The fully-parametric form is constructed by means of main characteristic curves, control curves, and various parameters to achieve quick-variation of hull forms. The numeric resistance analysis are performed via viscous flow solver and the calm-water total resistance force is defined as the optimization objective. The NSGA-II algorithm is used for evaluation of analysis results and regeneration of form variants, to achieve total resistance minimization. The optimization results show that the optimized hull form has lower resistance than Model 5365 form; a form variant with 2.02% total resistance reduction was obtained.

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Section: Introductionmentioning

confidence: 99%

Hydrodynamic optimization of a high-speed vessel by means of simulation-based design methodology

Timurlek

Şener

2022

Proceedings of the Institution of Mechanical Engineers, Part M:

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Cargo-Flow-Oriented Design of Supply Vessel Operating in Ice Conditions

Kondratenko

Tarovik

2018

Volume 8: Polar and Arctic Sciences and Technology; Petroleum Technology

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Due to the dynamic development of the oil and gas fields in the Arctic, the challenges of supply fleet sizing and composition in this region are becoming relevant. In most studies, the Arctic is mainly associated with ice conditions, but it is not the only factor that influences the design of platform supply vessels (PSV) and corresponding marine transport systems (MTS) for this region. The structure of cargo flow (i.e. its distribution by cargo types) affects the supply system significantly. It defines the level of utilization of vessel capacity that determines transport efficiency. At the same time, the literature represents this aspect poorly. This paper describes an approach to optimize supply fleet configuration by the criterion of total cost considering both non-stationary ice conditions and structure of cargo flows. The cargo-flow-oriented design concept incorporates the detailed calculation model of PSV and the special tactical planning algorithm. PSV model allows considering the influence of cargo spaces on the main characteristics and operational parameters of the ship. It covers the main design aspects of PSVs: general arrangement; lines plan; resistance in open water and ice; engine and propeller characteristics; hydrostatics; capacity and mass calculation. The pseudo-optimal tactical planning algorithm is intended to build the plan of voyages and to set the size of fleet considering the structure of cargo flow. As the test example, we examine a task of servicing the group of platforms in the Kara Sea. The case study shows that cargo flow structure has a high influence on the efficiency of PSVs in case of high-load operation; while a widespread “deck-cargo” approach is unable to consider this aspect because it ignores the vessel’s carrying capacity and payload. The conclusion about a higher efficiency of PSV compared to AHTS with the same displacement was drawn.

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Parametric Design and Multiobjective Optimization of Containerships

Abstract: The introduction of the energy efficiency design index (EEDI)

Cited by 2 publications

References 6 publications

Hydrodynamic optimization of a high-speed vessel by means of simulation-based design methodology

Hydrodynamic optimization of a high-speed vessel by means of simulation-based design methodology

Cargo-Flow-Oriented Design of Supply Vessel Operating in Ice Conditions

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