Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/122855
Title: NUMERICAL STUDY OF LIQUID SLOSHING IN LNG TANKS COUPLED WITH SHIP MOTIONS
Authors: LIU XIANGBO
Keywords: Level set method, Liquid sloshing, Two-phase flows, High-resolution convection schemes, Boundary element method, Coupled analysis
Issue Date: 6-Aug-2015
Citation: LIU XIANGBO (2015-08-06). NUMERICAL STUDY OF LIQUID SLOSHING IN LNG TANKS COUPLED WITH SHIP MOTIONS. ScholarBank@NUS Repository.
Abstract: Global growing needs for energy lead to the demand for LNG and LNG carriers. During LNG delivery and offloading operations, interactions between ship motions and internal LNG sloshing would affect the stability of LNG carrier and also lead to the structural damage to LNG tank wall. Thus, the study of LNG sloshing coupled with ship motions is important for the LNG industry. In this study, liquid sloshing is modeled numerically based on a finite difference approximation. The free surface is captured by the Level set method. High-resolution convection schemes are introduced to solve the fluid motions. Ship motions are solved by a higher-order boundary element method based on nonlinear potential flow theory. Based on kinematic and dynamic relations, the coupling methodology is proposed. The COUPLED model is validated by reproducing a benchmark experiment. Finally, a parametric study with regard to wave amplitude, frequency and tank filling level is conducted.
URI: http://scholarbank.nus.edu.sg/handle/10635/122855
Appears in Collections:Ph.D Theses (Open)

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