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Abstract Constraints related to offshore projects such as liquefied natural gas floating, production, storage, and offloading (LNG-FPSO) have been considered more important than those in onshore areas because topside process systems are located on the limited hull space. Therefore, the layout of the LNG-FPSO topside equipment shall be designed as multi-deck instead of single-deck, and this layout shall be optimised in order to reduce the area occupied by the topside equipment at the front-end engineering design stage. In this study, an optimal module layout for a generic offshore LNG liquefaction process system is derived, considering the deck penetration of long-length equipment across several decks. By considering the above, we formulate a mathematical model, which consists of 1652 unknowns, 1624 equality constraints, and 1048 inequality constraints. This mathematical model can be regarded as the optimisation problem, in which the number of unknowns is larger than the total number of equality constraints and given variables. To obtain the optimal layout, the minimisation of the total layout cost was defined as an objective function. The optimal module layout was then obtained using a mixed integer nonlinear programming.
Publication Date 2014-05-01
Role Corresponding Author
Category SCIE
Impact Factor 0.790

Nam-Kug Ku, Ji-Hyun Hwang, Joon-Chae Lee, Myung-Il Roh, Kyu-Yeul Lee, "Optimal Module Layout for a Generic Offshore LNG Liquefaction Process of LNG-FPSO", Ships and Offshore Structures, Vol. 9, No. 3, pp. 311-332, 2014.05.01


List of Articles
번호 분류 제목 Publication Date
34 International Journal Nam-Kug Ku, Myung-Il Roh, "Dynamic Response Simulation of an Offshore Wind Turbine Suspended by a Floating Crane", Ships and Offshore Structures, Vol. 10, No. 6, pp. 621-634, 2015.11.01 file 2015-11-01
» International Journal Nam-Kug Ku, Ji-Hyun Hwang, Joon-Chae Lee, Myung-Il Roh, Kyu-Yeul Lee, "Optimal Module Layout for a Generic Offshore LNG Liquefaction Process of LNG-FPSO", Ships and Offshore Structures, Vol. 9, No. 3, pp. 311-332, 2014.05.01 file 2014-05-01
32 International Journal Myung-Il Roh, Kyu-Yeul Lee, "Optimal Scheduling of Block Lifting in Consideration of the Minimization of Traveling Distance While Unloaded and Wire and Shackle Replacement of a Gantry Crane", Journal of Marine Science and Technology, Vol. 15, No. 2, pp. 190-200, 2010.06.01 file 2010-06-01
31 International Journal Nam-Kug Ku, Ju-Hwan Cha, Myung-Il Roh, Kyu-Yeul Lee, "A Tagline Proportional-Derivative Control Method for the Anti-Swing Motion of a Heavy Load Suspended by a Floating Crane in Waves", Journal of Engineering for the Maritime Environment, Vol. 227, No. 4, pp. 357-366, 2013.11.01 file 2013-11-01
30 International Journal Myung-Il Roh, "Determination of an Economical Shipping Route Considering the Effects of Sea State for Lower Fuel Consumption", International Journal of Naval Architecture and Ocean Engineering, Vol. 5, No. 2, pp. 246-262, 2013.06.01 file 2013-06-01
29 International Journal Ji-Hyun Hwang, Nam-Kug Ku, Myung-Il Roh, Kyu-Yeul Lee, "Optimal Design of Liquefaction Cycles of Liquefied Natural Gas", Industrial & Engineering Chemistry Research, Vol. 52, No. 15, pp. 5341-5356, 2013.03.01 file 2013-03-01
28 International Journal Ji-Hyun Hwang, Myung-Il Roh, Kyu-Yeul Lee, "Determination of the Optimal Operating Condition of the Dual Mixed Refrigerant Cycle for the LNG FPSO Topside Liquefaction Process", Computers and Chemical Engineering, Vol. 49, pp. 25-36, 2013.02.01 file 2013-02-01
27 International Journal Myung-Il Roh, "Block Layout Method in the Block Stockyard Based on the Genetic Algorithm", Ocean Systems Engineering, Vol. 2, No. 4, pp. 271-287, 2012.12.01 file 2012-12-01
26 International Journal Sol Ha, Nam-Kug Ku, Myung-Il Roh, Kyu-Yeul Lee, "Cell-Based Evacuation Simulation Considering Human Behavior in a Passenger Ship", Ocean Engineering, Vol. 53, pp. 138-152, 2012.10.01 file 2012-10-01
25 International Journal Sol Ha, Ju-Hwan Cha, Myung-Il Roh, Kyu-Yeul Lee, "Implementation of the Submarine Diving Simulation in a Distributed Environment", International Journal of Naval Architecture and Ocean Engineering, Vol. 4, No. 3, pp. 211-227, 2012.09.01 file 2012-09-01
24 International Journal Ji-Hyun Hwang, Myung-Il Roh, Kyu-Yeul Lee, "Integrated Engineering Environment for the Process FEED of Offshore Oil and Gas Production Plants", Ocean Systems Engineering, Vol. 2, No. 1, pp. 49-68, 2012.03.01 file 2012-03-01
23 International Journal Myung-Il Roh, Ju-Hwan Cha, "A Block Transportation Scheduling System Considering a Minimization of Travel Distance without Loading of and Interference between Multiple Transporters", International Journal of Production Research, Vol. 49, No. 11, pp. 3231-3250, 2011.06.01 file 2011-06-01
22 International Journal Ju-Hwan Cha, Seung-Ho Ham, Kyu-Yeul Lee, Myung-Il Roh, "Application of a Topological Modelling Approach of Multi-body System Dynamics to Simulation of Multi-floating Cranes in Shipyards", Journal of Multi-body Dynamics, Vol. 224, No. 4, pp. 365-373, 2010.12.01 file 2010-12-01
21 International Journal Ju-Hwan Cha, Myung-Il Roh, Kyu-Yeul Lee, "Dynamic Response Simulation of a Heavy Cargo Suspended by a Floating Crane Based on Multibody System Dynamics", Ocean Engineering, Vol. 37, No. 14-15, pp. 1273-1291, 2010.10.01 file 2010-10-01
20 International Journal Ju-Hwan Cha, Myung-Il Roh, Kyu-Yeul Lee, "Integrated Simulation Framework for the Process Planning of Ships and Offshore Structures", Robotics and Computer-Integrated Manufacturing Journal, Vol, 26, No. 5, pp. 430-453, 2010.10.01 file 2010-10-01
19 International Journal John-Kyu Hwang, Myung-Il Roh, Kyu-Yeul Lee, "Detailed Design and Construction of the Hull of an FPSO(Floating, Production, Storage, and Off-loading unit)", Ships and Offshore Structures, Vol. 5, No. 2, pp. 93-104, 2010.06.01 file 2010-06-01
18 International Journal Ju-Hwan Cha, Myung-Il Roh, Kyu-Yeul Lee, "Combined Discrete Event and Discrete Time Simulation Framework and Its Application to the Block Erection Process in Shipbuilding", Advances In Engineering Software, Vol. 41, No. 4, pp. 656-665, 2010.04.01 file 2010-04-01
17 International Journal Sang-Uk Lee, Myung-Il Roh, Ju-Hwan Cha, Kyu-Yeul Lee, "Ship Compartment Modeling Based On a Non-manifold Polyhedron Modeling Kernel", Advances In Engineering Software, Vol. 40, No. 5, pp. 378-388, 2009.05.01 file 2009-05-01
16 International Journal Myung-Il Roh, Kyu-Yeul Lee, Woo-Young Choi, Seong-Jin Yoo, "Improvement of Ship Design Practice Using a 3D CAD Model of a Hull Structure", Robotics and Computer-Integrated Manufacturing Journal, Vol. 24, No. 1, pp. 105-124, 2008.02.01 file 2008-02-01
15 International Journal Myung-Il Roh, Kyu-Yeul Lee, "Generation of the Production Material Information of a Building Block and Simulation of the Block Erection for Computer-Aided Process Planning and Scheduling in Shipbuilding", International Journal of Production Research, Vol. 45, No. 20, pp. 4653-4683, 2007.10.01 file 2007-10-01
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