Numerical simulation on the Naphtha Diffusion with the Leakage of Submarine Pipeline in Hangzhou Bay

Abstract

To study the diffusion behavior and the impact of the accident after the leakage of submarine naphtha pipeline in the Hangzhou Bay. The result shows that the diffusion of naphtha in seawater includes three stages by conducting the researches of three different influencing factors, which are leakage apertures, the running pressure of pipeline and velocity of the sea surface for the diffusion behavior of naphtha in seawater. The reached time and the horizontal diffusion distance will decrease with the increase of the leakage aperture and the running pressure of the pipe, but will increase with the increase of velocity of the sea surface when the naphtha reaches the sea surface. Finally, the relevant predictive model is obtained by the dimensionless fitting method, which can provide theoretical support for ensure safe operation of the submarine pipelines in the Hangzhou Bay.