Dynamic orifice flow model and compartment models for flooding simulation of a damaged ship

In this paper, new models for vented compartments and an accumulator model were proposed, which can adjust the inner pressure automatically, even for systems with many compartments and openings, especially for fully flooded compartments. The dynamic-orifice equation was investigated for use in the case of large openings, so that the ripples in the air pressure that had been caused by the square-root singularity of the existing orifice equation could be eliminated. Application to a recent real accident showed the usefulness of the proposed models.