Conference - 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 PRADS 2022, Dubrovnik, Croatia, 2022.10.09-13

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첨부 '1'	Proceeding_Lee.pdf,

Extra Form
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

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
506	Domestic Conference	임중현, 이상욱, 노명일, 이규열, "다면체를 이용한 선박 구획 계산에 관한 연구", 1999년도 대한조선학회 춘계학술발표회, 거제, pp. 103-106, 1999.04.22-23	1999-04-22
505	Domestic Conference	노명일, 이규열, "협동 최적화 방법에 의한 다분야 최적화 기법에 관한 연구", 1999년도 대한조선학회 추계학술발표회, 대전, pp. 159-164, 1999.11.11-12	1999-11-11
504	Domestic Conference	노명일, 이규열, "협동 최적화 접근방법에 의한 다분야 최적 설계에 관한 연구", 2000년도 한국CAD/CAM학회 학술발표회, 서울, pp. 163-170, 2000.02.11	2000-02-11
503	International Conference	Kyu-Yeul Lee, Seon-Ho Cho, Myung-Il Roh, "An Efficient Global-Local Hybrid Optimization Method Using Design Sensitivity Analysis", Proceedings of OptiCon 2000, Newport Beach, USA, pp. 1-13, 2000.10.26-27	2000-10-26
502	Domestic Conference	한성남, 이규열, 노명일, "개선된 유전자 알고리즘을 이용한 최적 공간 배치 설계에 관한 연구", 2001년도 한국CAD/CAM학회 학술발표회, 서울, pp. 253-260, 2001.02.09	2001-02-09
501	Domestic Conference	이규열, 노명일, "Hybrid Optimization 방법과 CORBA를 이용한 다분야 최적 설계에 관한 연구", 2001년도 한국항공우주학회 학술발표회, 진주, pp. 590-593, 2001.04.14	2001-04-14
500	Domestic Conference	한성남, 노명일, 이규열, "최적 공간 배치 설계를 위한 개선된 유전자 알고리즘에 관한 연구", 2001년도 한국경영과학회/대한산업공학회 춘계학술발표회, 양양, pp. 239, 2001.04.27-28	2001-04-27
499	International Conference	Kyu-Yeul Lee, Myung-Il Roh, Hang-Soon Choi, Woo-Jae Seong, "Development of Hybrid Optimization Method and Its Application to Ship Design Optimization", Proceedings of Pacific 2002 International Maritime Conference, Sydney, Australia, 2002.01.29-31	2002-01-29
498	Domestic Conference	이원준, 이규열, 권오환, 노명일, "의미론적 제품 데이터 모델 기반 초기 선체 구조 CAD 시스템 개발", 2002년도 한국CAD/CAM학회 학술발표회, 서울, pp. 75-87, 2002.01.30	2002-01-30
497	Domestic Conference	정혁수, 이규열, 노명일, "다중 갑판을 고려한 함정의 최적 격실 배치 설계에 관한 연구", 2002년도 대한조선학회 춘계학술발표회, 부산, pp. 71-78, 2002.04.18-19	2002-04-18

번호

분류

제목

Publication Date

506

Domestic Conference

임중현, 이상욱, 노명일, 이규열, "다면체를 이용한 선박 구획 계산에 관한 연구", 1999년도 대한조선학회 춘계학술발표회, 거제, pp. 103-106, 1999.04.22-23 file