An effective bidirectional solving method for the motion and mooring tension of moored floaters. (1st September 2022)

• Record Type: Journal Article
• Authors: Zeng, Fanxu; Zhang, Ningchuan; Huang, Guoxing; Pan, Wenbo; He, Meng
• Is Part Of: Ocean engineering. Volume 259(2022)
• Publication Date: 2022-09-01
• Subjects: Moored floaters -- Mooring tension -- Motion -- Bidirectional solving method -- Monitoring; Ocean engineering -- Periodicals; Ocean engineering; Periodicals; 620.4162
• DOI: 10.1016/j.oceaneng.2022.111924
• Languages: English
• ISSNs: 0029-8018

Abstract

Abstract: With more and more moored floaters having been applied in ocean engineering globally, the security of moored floaters is becoming a key concern. Although there are extensive studies on the motion and mooring tension of moored floaters, few of them addressed the direct relation between the motion and mooring tension of floaters. This study establishes a direct relation between floater motion and mooring tension through the fairlead position and proposes a new effective bidirectional solving method on the floater motion and mooring tension in time domain. Noted that this method is independent to specific environmental factors. To validate the proposed method, analytical solutions are firstly obtained and then compared with the 2-D experimental measurements and 3-D numerical simulations. The comparison shows that the predictions by the proposed method match well with the measurements and simulations. Therefore, given the time history on either motion or mooring tension of floaters, the other can be predicted by the proposed method efficiently. For operational environments offshore, this method can be used to predict the motion or mooring tension, which is also saving in cost and time. Highlights: Independent to specific environmental factors, this study establishes a direct relation between floater motion and mooring tension through the fairlead position. A new effective bidirectional method is proposed to solve the floater motion and mooring tension in time domain. To validate the proposed method, analytical solutions are obtained and compared with the 2-D experimental measurements and 3-D numerical simulations. The comparison shows the predictions by the proposed method match well with the measurements and simulations.