Effects of tank motion on oil spilling from damaged oil tanks

Yang, H., Yan, S. & Ma, Q. (2016). Effects of tank motion on oil spilling from damaged oil tanks. Proceedings of the International Offshore and Polar Engineering Conference, 2016-J, pp. 1013-1020.

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Abstract

The grounded or collided oil tankers are often subjected to periodic motions, which excites the liquid sloshing inside the cargo tanks and influences the oil spilling. This paper presents a systematic numerical investigation of the effects of the tank motions on the oil spilling from damaged oil tanks by using a VOF-based multiphase flow solver with the assistance of dynamic mesh techniques. For simplicity, only the two-dimensional single-hull tank (SHT) subjected to pre-specified periodic motions with different frequencies and amplitudes is considered. The results suggest that the tank motion does not only cause a periodic oscillation of the oil/water flow through the broken hole, but also results in a second long-duration stage of spilling after a quasi-hydrostatic-equilibrium condition occurs, leading to more significant amount of spilled oil.

Item Type: Article
Subjects: T Technology > TC Hydraulic engineering. Ocean engineering
Divisions: School of Engineering & Mathematical Sciences > Engineering
URI: http://openaccess.city.ac.uk/id/eprint/15459

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