A mathematical model on manoeuvrability of a LNG tanker in vicinity of bank in restricted water

Maimun, Adi; Priyanto, Agoes; Rahimuddin, Rahimuddin; Sian, A. Y.; Awal, Zobair Ibn; Celement, C.S.; Nurcholis,; Waqiyuddin, M.

doi:10.1016/j.ssci.2012.09.006

Cited by 19 publications

(7 citation statements)

References 5 publications

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“…A ship's swept path can be obtained by doubleintegrating the ship motion mathematical model's acceleration, including hydrodynamic derivatives. A numerical integration of the Dormand-Prince method (Maimun et al, 2013;Muhammad et al, 2015) then solved the equations of motion in this time-domain simulation using the MATLAB-Simulink program. The coefficient of hydrodynamic derivatives for the acting hull force and moment in Equation 2-and the interaction force coefficient among the hull, propeller, and rudder-were predicted using the derived regression equation developed by Yoshimura and Masumoto (2012).…”

Section: Simulation Programmentioning

confidence: 99%

Twin-Rudder-System Configurations’ Impact on Ferry Ships’ Course-Keeping Ability under Windy Conditions

Muhammad¹,

Paroka²,

Rahman³

et al. 2021

IJTech

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Ship course-keeping plays a vital role in navigation safety, especially when a ship is operating under windy conditions. A method to control ship movements through rudder-system configuration is necessary to stabilize a ship's course. This paper describes the twin-rudder-system configuration design's impact on a ship's course-keeping ability under windy conditions. A timedomain simulation using the MATLAB-Simulink program was developed for this purpose. A proportional integral derivative (PID) controller was used to adjust the ship's heading angle according to the desired path. Several parameters-such as relative wind velocity and directionswere accounted for in the simulation. The result shows that, at a wind direction of 88 o , the ship's course-keeping speed decreased; however, increasing wind velocity caused a large deviation in the ship's heading angle. Meanwhile, the ship's course-keeping speed increased with rising windspeed directions of 219 o . The ship's course-keeping time, at around 219 o under the simulation's wind direction, was 11.84% lower than during a previous sea-trial. A possible reason for this difference is that the simulation excluded waves and currents.

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Section: Simulation Programmentioning

confidence: 99%

Twin-Rudder-System Configurations’ Impact on Ferry Ships’ Course-Keeping Ability under Windy Conditions

Muhammad¹,

Paroka²,

Rahman³

et al. 2021

IJTech

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“…According to the safety management system of "human-machine-environment-control", Jiao et al (2011) [20] analyzed the hidden risk linked to the safety of LNG carriers from many aspects. Maimun et al (2012) [21] proposed a model to analyze the maneuverability difficulty, which was caused by the interaction forces between the LNG carrier and the adjacent bank in a narrow channel. Tarek (2009) [22] developed a multiple attribute risk assessment methods of LNG carrier based on the use of fuzzy rules, rule base, and fuzzy inference engine.…”

Section: Literature Reviewmentioning

confidence: 99%

Capacity Analysis for Approach Channels Shared by LNG Carriers

Gao

Chen

et al. 2020

JMSE

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The transport of liquefied natural gas (LNG) has significant impact on traffic capacity of waterways, especially the approach channels shared by LNG carriers and other types of ships (general cargo ships, container ships, etc.). Few studies take the behavioral characteristics of LNG carriers and their impacts into consideration. In this paper, we propose a framework for capacity analysis of shared approach channels based on the spatial–temporal consumption method. It consists of three modules: (1) the tide module predicts the tidal height and tidal time for identifying the time windows for LNG carriers; (2) the spatial–temporal consumption module is introduced to calculate the capacity of approach channels; (3) the LNG carrier navigation module is for analyzing the characteristics of LNG carriers and the impact on the capacity of approach channels. A spatial–temporal indexed chart is designed to visualize the utilization of the spatial–temporal resources. A case study on the approach channel of Yueqing Bay near the east coast of China is conducted to verify the effectiveness of the framework. The utilization rates of the approach channel and the impact of LNG carriers are presented using our method. The results of the case study indicate that the proposed traffic capacity analyzing framework can provide support for making traffic management strategies.

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“…According to Maimun et al [17], the ships have their movements significantly affected when sailing in shallow water, such as canals, because the hydrodynamic interaction between the ship and the bank located on laterals or bottom restrict the movements and develop other forces. Here, the bank effect will not be considered since the vessel travels to places where the relation between draft/depth does not produce this effect .…”

Section: Maneuvering Modeling Group (Mmg Model)mentioning

confidence: 99%

Preliminary Study on the Contribution of External Forces to Ship Behavior

Silva

Oleinik

Kirinus

et al. 2019

JMSE

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Computational modeling has become a prominent tool to simulate physical processes for research and development projects. The coastal region of southern Brazil is very susceptible to oil spill accidents. Currently, oil is intensively transported in the region due to the presence of the Rio Grande Harbor, the Transpetro Waterway Terminal (Petrobras) and the Riograndense S/A Oil Refinery. Therefore, simulations under ideal navigation conditions for ships with potentially polluting loads are important because their use can reduce oil spills and toxic compound accidents in the environment. Therefore, the main objective of this work is to present a preliminary study of the contribution of external forces to a ship’s behavior over a simulation period of 5 h. The methodology is based on the development of a numerical model using LaGrangian formalism and the calculus of variations, besides Maneuvering Modeling Group (MMG Model). The external forces considered were the wind acting directly on the ship, waves driven by wind, the rudder, the force acting on the hull, inertial forces, and seawater density. The results indicate that at the beginning of the simulation, the inertial forces were of primary importance for controlling the trajectory of the ship. After 5 h of simulations, the ship had completely changed its trajectory due to forces suffered by the ship, classified according to MMG Model.

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A mathematical model on manoeuvrability of a LNG tanker in vicinity of bank in restricted water

Cited by 19 publications

References 5 publications

Twin-Rudder-System Configurations’ Impact on Ferry Ships’ Course-Keeping Ability under Windy Conditions

Twin-Rudder-System Configurations’ Impact on Ferry Ships’ Course-Keeping Ability under Windy Conditions

Capacity Analysis for Approach Channels Shared by LNG Carriers

Preliminary Study on the Contribution of External Forces to Ship Behavior

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