The Influence of Oil leaking rate and Ocean Current Velocity on the Migration and Diffusion of Underwater Oil Spill

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.

Oil Spill Modeling: A Critical Review on Current Trends, Perspectives, and Challenges

“…The CDOG model, Zheng et al [186], has been compared with large scale and unique field experiments [170] performed in Norway [172]. After that, CDOG model was revised and improved by other scholars, and the underwater oil spill was simulated and predicted successfully [156,234,276]. Recently, the USA government agencies (MMS, NOAA) and oil companies have started using the CDOG model.…”

Robust Superhydrophobic PDMS@SiO2@UiO66-OSiR Sponge for Efficient Water-in-Oil Emulsion Separation

“…Oil/water separation has been a worldwide environmental issue due to the discharge of oily sewage after production and the frequent occurrence of oil leakage accidents. − In recent years, impressive developments of separation tools, such as oil skimming, membrane separation, adsorption, and biodegradation, have been realized to separate immiscible oil/water mixtures effectively. − However, stable and miscible emulsions are more difficult to separate than immiscible oil/water mixtures, especially with droplet sizes below 20 μm. , Currently, various emulsion separation technologies have been proposed, including centrifugation, coacervation, ultrasonic and heat separation, electrical treatment, and so on. − Although the technologies mentioned above have been applied in the purification of oil/water emulsions, these approaches still suffer from higher energy consumption, secondary pollution, slow treatment speed, and low separation efficiency, especially the highly stable microemulsions with specific surfactants. ,, …”

Underwater Acoustic Technology-Based Monitoring of Oil Spill: A Review

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