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http://dx.doi.org/10.7837/kosomes.2022.28.4.620

A Study on the Effect of the Orifice Shape on Oil Outflow from a Damaged Ship  

Park, Il-Ryong (Department. of Naval Architecture & Ocean Engineering, Dong-Eui University)
Publication Information
Journal of the Korean Society of Marine Environment & Safety / v.28, no.4, 2022 , pp. 620-631 More about this Journal
Abstract
This paper shows the numerical prediction of the change in oil outflow rate according to the orifice shape of a damaged ship by using the computational fluid dynamics (CFD) analysis method. It also provides discharge coefficients for various orifice shapes to be used in theoretical prediction approaches. The oil outflow from the model ship was analyzed using a multiphase flow method under the condition that the Froude and Reynolds number similitudes were satisfied. The present numerical results were verified by comparing them with the available experimental data. Along with the aspect ratio of the orifice and the wall thickness of the cargo tank, the effects of the orifice shapes defined by mathematical figures on the oil outflow were investigated. To consider more realistic situations, the investigation of the ef ect of the crushed iron plate around the damaged part was also included. The numerical results confirmed the change in oil outflow time for various shapes of the damaged part of the oil tank, and discharge coefficients that quantify the viscous effects of those orifice shapes were extracted. To verify the predicted discharge coefficients, they were applied to an oil spill estimation equation. As a result, a good agreement between the CFD and theoretical results was obtained.
Keywords
Computational fluid dynamics; Oil outflow; Discharge coefficient; Damaged ship; Orifice shape;
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Times Cited By KSCI : 1  (Citation Analysis)
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1 Kim, C. K., J. H. Oh, and S. G. Kang(2016), A review of Deepwater Horizon Oil Budget Calculator for its Application to Korea, Journal of the Korean Society for Marine Environmental Engineering, Vol. 19, No. 4, pp. 322-331.   DOI
2 Kim, W. J. and Y. Y. Lee(2001), A Preliminary Study for the Prediction of Leaking-Oil Amount from a Rupture Tank, Journal of the Korean Society for Marine Environmental Engineering, Vol. 4, No. 4, pp. 21-31.
3 Kim, W. J., Y. Y. Lee, and J. K. Yum(2001), Experimental and Computational study for the Prediction of Leaking-Oil Amount from a Ruptured Tank, The Korean Society for Marine Environment & Energy, pp. 5-14.
4 Lu, J., Z. Yang, H. Wu, W. Wu, J. Deng, and S. Yan(2018), Effects of tank sloshing on submerged oil leakage from damaged tankers, Proc. of Ocean Engineering, Vol. 168, No. 15, pp. 115-172.
5 Patankar, S. V.(1980), Numerical heat transfer and fluid flow, Hemisphere Publishing Corporation.
6 Tavakolli, M. T., J. Amdahl, and B. J. Leira(2009), Investigation of interaction between oil spills and hydrostatic changes, Proc. of Proceedings of the ASME 2009 28th International Conference on Ocean, Offshore and Arctic Engineering, OMAE2008-57913, pp. 803-811.
7 Lu, J., Z. Yang, H. Wu, W. Wu, F. Xu, H. Yang, and S. Yan(2016), Model experiment on the dynamic process of oil leakage from the double hull tanker, Journal of Loss Prevention in the Process Industries, Vol. 43, pp. 174-180.   DOI
8 Dodge, F. T., E. B. Bowles., J. E. Mann, and R. E. white(1980), Experiment verification and revision of the venting rate model of the Hazardous Assessment Computer System and the vulnerability model. United States Coast Guard, Office of Research and Development, Gronton, Connecticut, Final Report CG-D-63-80, pp. 207.
9 Lee, S. J.(2008), A Study on Social Impacts of the Hebei Spirit Oil Spill Accident in Korea, ECO, Vol. 12, No. 1, pp. 109-144.
10 Lu, J. S., F. C. Liu, and Z. Y. Zhu(2014), Effects of initial water layer thickness on oil leakage from damaged DHTs, The Twenty-fourth International Ocean and Polar Engineering Conference, Busan, Korea. ISOPE-I-14-009.
11 Muzaferija, S. and M. Peric(1999), Computation of free surface flows using interface-tracking and interface-capturing methods. In Mahrenholtz, O. & Markiewicz, M., eds. Nonlinear Water Wave Interaction. pp. 59-100, WIT Press.
12 Yang, H., S. Yan., Q. Ma, J. Lu, and Y. Zhou(2017), Turbulence modelling and role of compressibility on oil spilling from a damaged double hull tank, Proc. of International Journal for Numerical Methods in Fluids, Vol. 83, No. 11, pp. 841-865.   DOI
13 Siemens(2019), STAR-CCM+ User Guide. Version 14.04.
14 Tavakolli, M. T., J. Amdahl, A. Ashrafian, and B. J. Leira (2008), Analytical predictions of oil spillage from grounded cargo tankers, Proc. of Proceedings of the ASME 27th International Conference on Offshore Mechanics and Arctic Engineering, OMAE2008-57913, pp. 911-920.
15 Tavakolli, M. T., J. Amdahl, and B. J. Leira(2011), Experimental investigation of oil leakage from damaged ships due to collision and grounding, Proc. of Ocean Engineering, Vol. 38, pp. 841-865.