دانلود مقاله Free-Surface Hydrodynamic Analysis of Floating Offshore Structures (FOS)Using Multiphase Flow Modeling
سال انتشار: ۱۳۸۵
محل انتشار: هفتمین همایش بین المللی سواحل، بنادر و سازه های دریایی
تعداد صفحات: ۵
Shapoor Jafar Gholi Nezhad – M.Sc Student of Hydrodynamics
Taktom Haddad – M.Sc Student of Hydrodynamics
Saeed Shabani – Senior Researcher of Subsea R&D Center
Ahmad Sedaghat – Assistant Prof. of Mechanical Eng. Department
The aim of this study is to couple CFD analysis of the aerodynamic flow around the masts, together with the hydrodynamic flow around the hull and mooring line of a cylindrical buoy, including viscous effects and surface wave generation at the waterline. The volume of fluid (VOF) model in FLUENT software was used for this purpose. This multiphase model is designed for immiscible fluids (air and water in this case), and tracks the interfaces between them. The environmental conditions were adopted based on the met-ocean data of the Persian Gulf.
The results of particular interest from the analysis include the free surface elevation with the related wave drag, and the aerodynamic and hydrodynamic lift and drag acting on the masts, hull, and mooring line. The lift and drag results can be used to derive the thrust and lateral forces on the buoy, which can then be used to predict the buoy velocity corresponding to a fixed configuration in terms of heave, drift and heel angles.