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http://dx.doi.org/10.3744/SNAK.2022.59.6.400

A Comparative Study of Numerical and Theoretical Predictions of Oil Outflows from Damaged Ships  

Yo-Seop, Moon (Dept. of Naval Architecture & Ocean Engineering, Dong-Eui Univ.)
Je-In, Kim (Dept. of Naval Architecture & Ocean Engineering, Dong-Eui Univ.)
Il-Ryong, Park (Dept. of Naval Architecture & Ocean Engineering, Dong-Eui Univ.)
Seong-Bu, Suh (Dept. of Naval Architecture & Ocean Engineering, Dong-Eui Univ.)
Seung-Guk, Lee (Korea Research Institute of Ships & Ocean Engineering)
Hyuek-Jin, Choi (Korea Research Institute of Ships & Ocean Engineering)
Sa-Young, Hong (Korea Research Institute of Ships & Ocean Engineering)
Publication Information
Journal of the Society of Naval Architects of Korea / v.59, no.6, 2022 , pp. 400-412 More about this Journal
Abstract
This paper provides the results of numerical and theoretical predictions of oil outflows from damaged single-hull and double-hull ships.Theoretical equations derived from the unsteady Bernoulli equation and a CFD method for multi-phase flow analysis were used to estimate the oil outflow rate from cargo tank. The predicted oil outflow rate from a single-hull cargo tank damaged due to grounding and collision accidents showed a good agreement with the available experimental results in both numerical and theoretical analyses. However, in the case of the double-hull conditions, the time variation of the amount of water and oil mixture inside the ballast tank predicted by the theoretical equation showed some different behavior from the numerical results. The reason was that the interaction of the oil flow with the water inflow in the ballast tank was not reflected in the theoretical equations. In the problems of the initial pressure condition in the cargo and ballast tanks, the oil outflow and water inflow were delayed at the pressure condition that the tanks were sealed. When the flow interaction between the oil and water in the ballast tank was less complicated, the theoretical and the numerical results showed a good agreement with each other.
Keywords
Oil outflow; Damaged ship; Computational fluid dynamics; Bernoulli equation; Single hull; Double hull;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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