Numerical modelling and simulation of floating oil storage tanks considering the sloshing effect

Abstract

This report is performed at Department of Marine Technology at Norwegian University of Technology and Science (NTNU), which would also serve as part of the master thesis at Chalmers University of Technology (CTH). This project is cooperate with SINTEF Ocean (formerly MARINTEK) in connection with their project with NUS on multi-purpose floating structures. The main goal of the project is to develop a time-domain model for motion response analysis of a single floating oil storage tank, and a few interconnected tanks under wave loads considering the effect of sloshing of the internal flow based on the potential flow theory. The main task of this thesis is to develop the time-domain retardation functions of the radiation forces using the frequency- domain hydrodynamic results for both external and internal flow, and use them for time- domain simulations in the software SIMO, developed by SINTEF Ocean. A comparison in terms of platform motions and loads in moorings and connectors will be made for the cases with and without the consideration of internal flow.