Abstract
Severe environmental pollution and huge economic losses would be caused by submarine oil spill with the increasing development of petroleum energy in sea. In order to predict the law of migration of oil spill from submarine pipelines accurately, the volume of fluid (VOF) model and realizable k-ε turbulence model were employed to establish numerical simulation of submarine oil spill, and the experiments were used to verify the feasibility of the numerical models. Different oil leaking rate and ocean velocity were simulated in the study. The simulation results indicated that comparing with oil leaking rate (set vertical migration velocity, Uo), current velocity (set horizontal migration velocity, Uw) has a greater influence on the migration of the oil spilling; the actual vertical migration velocity (Uo1), actual horizontal migration velocity (Uw1) and R1 (the ratio of Uo1 and Uw1) are positively correlated with R (the ratio of Uo and Uw), and they both fluctuate within a small range no matter how large R is; when 20 ≤ R ≤ 150, R1 fits a linear fit curve with curve as R1 = 0.66932 + 0.00215 R, which can provide a theoretical reference to the recovery system of underwater pipeline oil spilling emergency.
Highlights
With the gradual depletion of land resources, people have turned their eyes to the ocean
The oil leaking rate and ocean current velocity are respectively two factors that have a greater impact on migration pattern of submarine oil spill
When studying the effects of different factors on submarine oil spills, many scholars have found that the larger the oil leaking rate, the larger the initial momentum is and the shorter the time to reach the water surface[40,41,42,43]
Summary
With the gradual depletion of land resources, people have turned their eyes to the ocean. The oil leaking rate and ocean current velocity are respectively two factors that have a greater impact on migration pattern of submarine oil spill.
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