Numerical Investigation of Extreme Wave Effects on Cylindrical Offshore Structures

摘要

The interaction between extreme wave and a surface-piercing verticalrncylinder is investigated numerically based on our recent naoe-Foam-rnSJTU solver, which is developed under the framework of thernOpenFOAM, an open source code library writing with fully objectorientedrnC++ language. The governing equations are discretized byrnusing the finite volume method. Two fluids are considered and thernvolume of fluids (VOF) technique is employed to capture water-airrninterface. The transient extreme water wave is generated by directionalrnwave focusing just with two different regular waves. The model isrnvalidated by compare the extreme wave profile with the correspondingrnexperimental data. Then the simulation of extreme wave-cylinderrninteractions is carried out. Extreme wave impact loading on therncylinder and wave run-up problems are studied and the results arernanalyzed and discussed. The presented results show the details ofrnextreme wave effect on the cylinder. The present numerical method isrnvalidated to be efficiency for solving the problem of wave-structurerninteraction with large deformation of the free-surface.