Moonpool dimensions and position optimization with Genetic Algorithm of a drillship in random seas

Machado, Lucas do Vale; Fernandes, Antonio Carlos

doi:10.1016/j.oceaneng.2022.110561

Cited by 6 publications

(2 citation statements)

References 11 publications

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“…With advances in technology, the maritime industry has seen an increased demand for specialized vessels capable of holding a designated position for extended periods of time. Such vessels can perform a variety of functions, including oil exploration [1,2], performing salvage operations, laying pipelines [3,4], conducting seismic surveys [5] or operating wind farms [6]. In many applications, for example in ROVs [7], the preferred positioning system is dynamic positioning, using a set of thrusters to maintain the vessel's position.…”

Section: Introductionmentioning

confidence: 99%

Determination of Anchor Drop Sequence during Vessel Anchoring Operations Based on Expert Knowledge Base and Hydrometeorological Conditions

Wnorowski,

Łebkowski

2023

Electronics

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Presently, the most common technique for maintaining a ship’s location is dynamic positioning, which uses a series of thrusters to hold its position. This method is resilient to moderate hydro-meteorological conditions, eliminating the need for extensive preliminary steps before initiating positioning operations. An alternative approach involves station keeping using a set of anchors, where thrusters are not employed, necessitating careful planning of the anchorage in light of hydro-meteorological conditions. Presently, in vessels using this anchoring method, the captain determines the order of anchor drops, taking into account the prevailing weather conditions, the ship’s maneuvering abilities, and vessel capability plots. This article introduces a novel algorithm that uses sensor-acquired weather data and a cognitive knowledge base to establish the best sequence for anchor drops. This innovation represents a significant stride towards the automation of the anchoring process. By using the anchorage planning algorithm presented in this publication, it has been possible to reduce the time required for anchor deployment by about 52%, due to the preparation of the anchor deployment strategy in port. A reduction in energy consumption of about 8% was also achieved.

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Section: Introductionmentioning

confidence: 99%

Determination of Anchor Drop Sequence during Vessel Anchoring Operations Based on Expert Knowledge Base and Hydrometeorological Conditions

Wnorowski,

Łebkowski

2023

Electronics

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“…Especially for this reason, the CFD is widely used for research in marine engineering. The most frequent approach for the Eulerian moon pool simulations is the Volume of Fluid (VOF) [3,4,5,6], a surfacecapturing model. Since SPH is particularly efficient for violent impact flows, for macro-scale and multiphase problems, we think it might be a viable alternative to VOF in selected applications.…”

Section: Introductionmentioning

confidence: 99%

Simulation of sloshing in the moon pool with Smoothed Particle Hydrodynamics

Spricigo

Pozorski

2022

J. Phys.: Conf. Ser.

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In maritime heavy industry, the moon pool is an opening through the hull of some vessels. We replicate a generic design of the pool with the Lagrangian approach Smoothed Particle Hydrodynamics (SPH) whose mathematical model efficiently simulates the interphasial surface. In this study we present the capability of our in-house SPH code to handle the sloshing in the moon pool. We validate the SPH approach to flows for the sloshing tank benchmark and show the stability of this approach for the non-trivial case of the moon pool.

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Dynamic analysis of drillship under extreme metocean hurricane condition in ultra-deep water

Chandrasekaran,

Sharma,

Selvakumar

2023

J Mar Sci Technol

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Moonpool dimensions and position optimization with Genetic Algorithm of a drillship in random seas

Cited by 6 publications

References 11 publications

Determination of Anchor Drop Sequence during Vessel Anchoring Operations Based on Expert Knowledge Base and Hydrometeorological Conditions

Determination of Anchor Drop Sequence during Vessel Anchoring Operations Based on Expert Knowledge Base and Hydrometeorological Conditions

Simulation of sloshing in the moon pool with Smoothed Particle Hydrodynamics

Dynamic analysis of drillship under extreme metocean hurricane condition in ultra-deep water

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