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Title: Sea-Wave-Induced Sloshing of Liquid in Floating Storage Tank
Keywords: Liquid Sloshing, Floating Tank, Baffle, State Space Model, VOF, Free Surface
Issue Date: 21-Jan-2013
Citation: LUONG VAN TUYEN (2013-01-21). Sea-Wave-Induced Sloshing of Liquid in Floating Storage Tank. ScholarBank@NUS Repository.
Abstract: In this study, a hybrid frequency-time domain simulation scheme is developed to analyze the dynamic response of sea-wave-induced fully non-linear sloshing fluid in a floating tank. During simulation time, the sloshing model is coupled with the floating tank model so that the interaction between the non-linear sloshing fluid and floating rectangular tank motions arising from wave-induced forces is considered. A time domain model based on frequency domain data is built upon the Cummins equation. Navier-Stokes equations are applied to model the nonlinear fluid sloshing in the tank and are solved using the finite difference method and the volume of fluid method is used to track the non-linear free surface. The simulation scheme is applied for parametric studies of the dynamic response of sea-wave-induced fully non-linear sloshing fluid in both baffled and un-baffled floating rectangular tanks. Firstly, different wave frequencies and filling levels of sloshing fluid are investigated to find out resonant area for dynamic response of tank motion as well as sloshing fluid. Then, parametric studies are carried out with different significant wave heights when irregular waves are considered. Finally, effect of baffles in coupled sloshing-floating tank motion problem is considered. Several parameters of interesting, including type of baffles and dimension of baffles are studied to optimize the sloshing mitigation solution. The coupling effects between floating tank motions and sloshing fluid inside the tank are found to be significant and should be considered in analysis and design processes of floating tanks
Appears in Collections:Ph.D Theses (Open)

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