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
- 문요섭; 김제인; 박일룡; 서성부; 이승국; 최혁진; 홍사영
- 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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