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손상 선박 기름 유출량 추정을 위한 수치해석과 이론식의 비교 연구A Comparative Study of Numerical and Theoretical Predictions of Oil Outflows from Damaged Ships

Other Titles
A Comparative Study of Numerical and Theoretical Predictions of Oil Outflows from Damaged Ships
Authors
문요섭김제인박일룡서성부이승국최혁진홍사영
Issue Date
12월-2022
Publisher
대한조선학회
Keywords
Oil outflow(기름유출); Damaged ship(사고선박); Computational fluid dynamics(전산유체역학); Bernoulli equation(베르누이방정식); Single hull(단일선체); Double hull(이중선체)
Citation
대한조선학회 논문집, v.246, no.59, pp 400 - 412
Pages
13
Journal Title
대한조선학회 논문집
Volume
246
Number
59
Start Page
400
End Page
412
URI
https://www.kriso.re.kr/sciwatch/handle/2021.sw.kriso/9392
DOI
10.3744/SNAK.2022.59.6.400
ISSN
1225-1143
2287-7355
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.
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Choi, Hyuek Jin
해양공공디지털연구본부 (해사안전·환경연구센터)
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