On the development of a fast modeling of floodwater effects on ship motions in waves

Maria Acanfora*, Antonio Cirillo

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

7 Citations (Scopus)

Abstract

The motions of a flooded ship in waves are difficult to evaluate. They are affected by complex phenomena involving ship and floodwater dynamic interactions. Several numerical methods have been proposed to estimate the dynamic behavior of a damaged ship in waves. In this article, a fast simulation tool is developed to tackle the problem, aiming at a simplified method with an acceptable accuracy of the results. A novel approach in simulating floodwater effects on ship motions is presented. The method allows modeling the floodwater motions (seen as lumped mass) out of phase from ship motions. This technique is based on the basic fluid mechanics knowledge for a liquid in a uniformly accelerated tank. The study intends to analyze the behavior of a flooded ship in regular beam waves, for compartment fillings that involve shallow and intermediate fluid depths. The nonlinear model for the roll damping moment of a ship is implemented. An attempt to model viscous effects in the floodwater dynamics is proposed and applied. Two sets of applications are carried out on two different hull models. The comparisons of the intact and of the flooded ship responses in waves are conducted and discussed.

Original languageEnglish
Pages (from-to)877-887
Number of pages11
JournalProceedings of the Institution of Mechanical Engineers. Part M: Journal of Engineering for the Maritime Environment
Volume231
Issue number4
DOIs
Publication statusPublished - 1 Nov 2017
MoE publication typeA1 Journal article-refereed

Keywords

  • analytical methods: maritime systems
  • dynamics: maritime systems
  • naval architecture
  • Ship hydrodynamics
  • simulation: maritime systems
  • structural (solid/fluid) interactions (maritime)

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