Numerical Simulation on Oil Spill at Different Positions on the Back Surface of a Blunt Body

The movement of oil spilled from the back surface of an underwater blunt body is influenced by the flow around the blunt body, so the trajectory of the oil movement changes with the vortex behind the blunt body. A numerical modelling using VOF model is established to simulate the oil spill process. Three typical spilling points at the top, middle, and bottom of the back surface of the blunt body, respectively, are simulated at different leaking rates. Their vorticity fields and the oil trajectories are analyzed. The results show that the spill from the top position generates the smallest oil distribution on the sea surface, while that from the bottom position leads to the largest one.