Numerical model of towing line in sea transport

Ćatipović, Ivan and Degiuli, Nastia and Werner, Andreja and Čorić, Većeslav and Radanović, Jadranka (2014) Numerical model of towing line in sea transport. = Numerical model of towing line in sea transport. In: ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2014, 08-13.06.2014., San Francisco; United States.

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Towing as a specific type of sea transport is often used for installing objects for drilling and exploitation of underwater gas and oil wells. Also, towing proved to be a cost-effective solution for the installation of the offshore wind turbine electric generators at sea locations. Because of the mass of these objects the need for towing increases progressively. Time domain numerical model for the wave-induced motions of a towed ship and the towline tension in regular head seas is presented in this paper. For the sake of simplicity, one end of the towing line is attached to ship's bow and another end has prescribed straight line motion. All considerations are done in the vertical plane so the ship is modeled as a rigid body with three degrees of freedom. Hydrodynamic loadings due to waves are taken into account along with added mass and damping. Dynamics of the towing line is described by finite elements. Due to the nonlinear properties of the problem calculations are done in time domain. Comparison of the obtained numerical results is made with previously published results.

Item Type: Conference or Workshop Item (Lecture)
Keywords (Croatian): Numerical models; Offshore wind turbines; Oil well drilling; Oil wells; Ships; Time domain analysis; Added mass and damping; Cost-effective solutions; Hydrodynamic loading; Nonlinear properties; Numerical results; Three degrees of freedom; Vertical plane; Wave-induced motions; Offshore oil wells
Subjects: TECHNICAL SCIENCE > Shipbuilding
Divisions: 600 Department of Naval Engineering and Marine Technology > 610 Chair of Hydromechanics of Marine Structures
600 Department of Naval Engineering and Marine Technology > 630 Chair of Ship Design and Offshore Technology
Indexed in Web of Science: Yes
Indexed in Current Contents: No
Citations JCR: 0 (13.11.2017.)
Citations SCOPUS: 2 (13.11.2017.)
Date Deposited: 01 Jun 2015 09:13
Last Modified: 13 Nov 2017 12:58

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