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Abstract As the International Maritime Organization (IMO) significantly tightens the emission gas regulations for ships, ships using Liquefied Natural Gas (LNG), which is an eco-friendly fuel, are attracting attention. Accordingly, the demand for LNG offloading operations in which Floating Liquefied Natural Gas (FLNG) delivers LNG to an LNG carrier is increasing in the process of LNG production. Meanwhile, for safe operation, dynamic analysis is required in advance, and safety regulations should be established. However, the analysis of the LNG offloading operation is very complex as ships are connected with offloading arms, which consists of several bodies and joints. Furthermore, the hydrodynamic interaction between the floating bodies should be considered at the same time. In this study, the dynamic analysis of LNG offloading operations with FLNG and LNG carrier considering the interaction of two floating bodies was conducted, and the joint forces exerted on the offloading arms were analysed. Firstly, the multibody dynamics-based equations of motion were formulated for the analysis of the offloading arms. Subsequently, the external forces due to the hydrodynamic interaction of two floating bodies were calculated in the time domain and integrated with the multibody dynamics. Finally, the coupled analysis of the ships and the offloading arms were performed according to the various parameters of the offloading arms, such as the number, position, and length. As a result, the dynamic load acting on the joints of the offloading arms were analysed under the various environmental conditions, and the safety regulations for the offloading operation were derived.
Publication Date 2022-10-09
Hye-Won Lee, Myung-Il Roh, Seung-Ho Ham, Bo-Woo Nam, "Coupled Analysis of the LNG Offloading Operation Based on Multibody Dynamics", Proceedings of International Symposium on PRADS(Practical Design of Ships and Other Floating Structures) 2022, Dubrovnik, Croatia, 2022.10.09-13

List of Articles
번호 분류 제목 Publication Date
41 International Conference Jin-Hyeok Kim, Myung-Il Roh, In-Chang Yeo, Ki-Su Kim, "Estimation of the Hydrodynamic Performance of the Parameterized Hull Forms Using Deep Learning", Proceedings of G-NAOE 2022, Changwon, Korea, 2022.11.06-10 2022-11-06
40 International Conference Ji-Hyun Hwang, Young-Joo Ahn, Joon-Ho Min, Gwang-No Lee, Ho-Jin Jeong, Mung-Yu Kim, Hee-Chang Kim, Myung-Il Roh, Kyu-Yeul Lee, "Application of an Integrated Basic Process Engineering Solution to Generic LNG FPSO Topsides", Proceedings of ISOPE 2009 file 2009-06-21
39 International Conference Ji-Hyun Hwang, Nam-Kug Ku, Joon-Chae Lee, Myung-Il Roh, Kyu-Yeul Lee, "Optimal Synthesis of LNG FPSO Liquefaction Cycles", Proceedings of ISOPE(International Society of Offshore and Polar Engineers) 2012, Rhodes, Greece, pp. 927-935, 2012.06.17-22 file 2012-06-17
38 International Conference Ji-Hyun Hwang, Ju-Hwan Cha, Seung-Ho Ham, Bo-Ram Kim, Myung-Il Roh, Kyu-Yeul Lee, "Establishment of Offshore Process FEED Method for Oil-Based FPSO Topsides Systems", Proceedings of ISOPE 2009, Osaka, Japan, pp. 144-150, 2009.06.21-26 file 2009-06-21
37 International Conference Ji-Hyun Hwang, Joon-Ho Min, Young-Joo Ahn, Hee-Chang Kim, Myung-Il Roh, Kyu-Yeul Lee, "Optimized Methodology to Build an Integrated Solution to Offshore Topside Process Engineering", Proceedings of ISOPE 2008, Vancouver, Canada, 2008.07.06-11 file 2008-07-06
36 International Conference Jeong-Woo Hong, Seung-Ho Ham, Luman Zhao, Xing Li, Sol Ha, Myung-Il Roh, "Offshore Installation of Subsea Equipment Considering Elasticity of the Crane Boom in Harsh Environment", Proceedings of ISOPE 2015, Hawaii, USA, 2014.06.21-26 file 2015-06-23
35 International Conference Jeong-Ho Park, Myung-Il Roh, Hye-Won Lee, Jisang Ha, Yeong-Min Jo, Nam-Sun Son, "Obstacle Detection and Tracking of Unmanned Surface Vehicles Using Multi-view Images in Marine Environment", Proceedings of ICCAS 2022, Yokohama, Japan, 2022.09.13-15 2022-09-13
34 International Conference Jeong-Ho Park, Myung-Il Roh, Hye-Won Lee, Jisang Ha, Yeong-Min Jo, Nam-Sun Son, "Detection and Tracking Methods of Maritime Obstacles Using Multiple Cameras", Proceedings of ICDM 2022, Siheung, Korea, 2022.04.28-29 2022-04-28
33 International Conference In-Chang Yeo, Myung-Il Roh, Hye-Won Lee, "An Optimization Method of the Surround-View Camera System for Automatic Berthing of Ships", Proceedings of G-NAOE 2022, Changwon, Korea, 2022.11.06-10 2022-11-06
32 International Conference Hye-Won Lee, Seung-Ho Ham, Jeong-Woo Hong, Sol Ha, Myung-Il Roh, "Motion Analysis of a Heavy Load Suspended by a Floating Crane Using Constraint-based Wire Rope based on Discrete Variational Method", Proceedings of the 28th Asian-Pacific TEAM 2014 file 2014-10-15
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