Ships added mass effect on a flexible mooring dolphin in berthing manoeuvre

Grm, Aleksander (author)

This paper deals with the hydrodynamic effect of the ship on a flexible dolphin during a mooring manoeuvre. The hydrodynamic effect refers to the change in momentum of the surrounding fluid, which is defined by the concept of added mass. The main reason for the present study is to answer the question, “What is the effect of the added mass compared to the mass of the ship during the mooring procedure for a particular type of ship?” Measured angular frequencies of dolphin oscillations showed that the mathematical model can be approximated by the zero frequency limit. This simplifies the problem to some extent. The mooring is a pure rocking motion, and the 3D study is approximated by the strip theory approach. Moreover, the calculations were performed with conformal mapping using conformal Lewis mapping for the hull geometry. The fluid flow is assumed to be non-viscous, non-rotating and incompressible. The results showed that the additional mass effect must be taken into account when calculating the flexible dolphin loads.

• Language: English
• Keywords: added mass, conformal mapping, Lewis mapping
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: FPP - Faculty of Maritime Studies and Transport
• Publication status: Published
• Publication version: Version of Record
• Year: 2021
• Number of pages: 21 str.
• Numbering: Vol. 9, iss. 2, art. 108
• PID: 20.500.12556/RUL-134889
• UDC: 532.5:656.61
• ISSN on article: 2077-1312
• DOI: 10.3390/jmse9020108
• COBISS.SI-ID: 48410115
• Publication date in RUL: 10.02.2022

Record is a part of a journal

• Title: Journal of marine science and engineering
• Shortened title: J. mar. sci. eng.
• Publisher: MDPI
• ISSN: 2077-1312
• COBISS.SI-ID: 523219993

Licences

• License: CC BY 4.0, Creative Commons Attribution 4.0 International
• Link: http://creativecommons.org/licenses/by/4.0/
• Description: This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
• Licensing start date: 01.02.2021

Secondary language

• Language: Slovenian
• Keywords: hidrodinamika, dodana masa, konformna preslikava, Lewisova preslikava

Projects

• Funder: ARRS - Slovenian Research Agency
• Project number: P2-0394
• Name: Modeliranje in simulacije v prometu in pomorstvu