Parameters influence on maneuvered towed cable system dynamics. (January 2015)

• Record Type: Journal Article
• Authors: Wang, Zhibo; Sun, Gang
• Is Part Of: Applied ocean research. Volume 49(2015:Jan.)
• Page Start: 27
• Page End: 41
• Publication Date: 2015-01
• Subjects: Cable dynamics -- Towing maneuvers -- Heave motion -- Damped oscillation; Ocean engineering -- Periodicals; 620.416205
• DOI: 10.1016/j.apor.2014.10.009
• Languages: English
• ISSNs: 0141-1187

Abstract

Highlights: Damped oscillation of towed cable system in different spiral courses is analyzed. The transitions of sharp turns and gradual turns are parametrically simulated. The heave behavior of towed vehicle is parametrically simulated. Abstract: The dynamic response of a towed cable system to ship maneuver is parametrically simulated. Three dimensionless parameters influence on towed cable system maneuverability is investigated. They are ratio of total length to turning radius R / L, ratio of cable mass to vehicle mass σ, and ratio of mass unit length to hydrodynamic force w / r . An oscillatory motion of towed vehicle is found in simulation of spiral towed courses. Features of this oscillation in different spiral courses are compared. The sharp turns, gradual turns and their transient states of towed cable dynamics for different course directions are discussed extensively. According to the characters of transient states and horizontal trajectories evolution of maneuvered cable system, the dynamic behaviors can be divided into three situations in Fig. 8 turning maneuvers. The behavior of towed cable system during a zigzag turning course is simulated in the end. Two ingredients of heave motion are found during small ratio of turning radii to length in this course. The primary damp to initial turning becomes weak and the response to alternative turns plays a more and more important role. The damping properties of the transient behavior in different maneuvers show a periodical invariance to σ during some turning maneuvers.