Modeling Oil Droplet Formation and Evolution under Breaking Waves

Chen, Z.; Zhan, C. S.; Lee, K.; Li, Z. K.; Boufadel, Michel C.

doi:10.1080/15567030701531295

Cited by 6 publications

(4 citation statements)

References 9 publications

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“…After continuous collision, coalescence and breakage of oil droplets in wave environment, the oil droplet population gradually reaches equilibrium and maintains a stable size distribution in the water column [114].…”

Section: Oil Droplet Size Distributionmentioning

confidence: 99%

Migration Movements of Accidentally Spilled Oil in Environmental Waters: A Review

Jiang,

Han,

Wang

et al. 2023

Water

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Accidentally spilled oil can cause great harm to the ecological balance of water once it enters the environmental waters. Clarifying its movement behavior and migration law in water has been the focus of environmental hydraulics research. This review starts from the mechanism of the oil spill migration process, and firstly reviews the kinematic characteristics of the smallest moving unit of the oil spill, the individual oil droplet, as well as focusing on several key aspects such as droplet shape, trajectory, terminal velocity and drag coefficient. Subsequently, considering the commonalities and differences between inland riverine and oceanic environments, different aspects of oil droplet collision, coalescence, breakage, particle size distribution, and vertical diffusion are discussed separately. Finally, the current status of research on the migration laws of accidental oil spills in environmental waters is summarized, and feasible future research directions are proposed to address the emerging research problems and research gaps.

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Section: Oil Droplet Size Distributionmentioning

confidence: 99%

Migration Movements of Accidentally Spilled Oil in Environmental Waters: A Review

Jiang,

Han,

Wang

et al. 2023

Water

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“…They found that the volume-based oil droplet size distribution is lognormal in the absence of dispersant and bi-modal in the presence of dispersant. Efforts for modeling those data were conducted by Boufadel et al [9] and Chen et al [10]. Recently, Li et al [11] reported experimental results of oil dispersion due to a plunging breaker of a solitary wave without and with dispersant.…”

Section: Turbulent Mixing Of Droplets and Bubblesmentioning

confidence: 99%

Oil Droplet Dispersion under a Deep-Water Plunging Breaker: Experimental Measurement and Numerical Modeling

Cui

Geng

Robinson

et al. 2020

JMSE

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Knowledge of the droplet size distribution (DSD) of spilled oil is essential for the accurate prediction of oil transport, dissolution, and biodegradation. Breaking waves play important roles in oil droplet formation in oceanic environments. To understand the effects of breaking waves on oil DSD, oil spill experiments were designed and performed in a large-scale wave tank. A plunging breaker with a height of about 0.4 m was produced using the dispersive focusing method within the tank. Oil placed within the breaker resulted in a DSD that was measured using a shadowgraph camera and found to fit a Gaussian distribution N (µ = 1.2 mm, σ2 = 0.29 mm2). For droplets smaller than 1500 µm, the number-based DSD matched the DS1988 correlation, which gives N(d) ~ d−2.3, but this was N(d) ~ d−9.7 for droplets larger than 1500 µm. An order of magnitude investigation revealed that a Gaussian volume-based DSD results in a number-based DSD that may be approximated by d−b (with b ≈ 2) for small diameters (relative to the mean), which explains the occurrence of the DS1988 correlation. With the measured wave hydrodynamics, the VDROP model was adopted to simulate the DSD, which closely matched the observed DSD. The present results reduce the empiricism of the DS1988 correlation.

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“…The findings indicated a significant influence of wave intensity on both the dispersion of oil spills and the resulting dispersion stability. Chen et al, (2009) [16] studied the calculation of energy dissipation rate and applied it to the dynamics of oil droplets, quantifying the relationship between wave energy and oil droplet formation. Considering the critical variables, such as density, viscosity, and oil-water interfacial tension, Yu et al, (2019) [17] conducted physical experiments to investigate the formation and sinking of oil suspended in water.…”

Section: Introductionmentioning

confidence: 99%

Effects of Physical Properties and Environmental Conditions on the Natural Dispersion of Oil

Wang,

Han,

Zhang

et al. 2023

JMSE

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The natural dispersion of oil depends on the oil types, wave-mixing energy, and the temperature and salinity of water. Laboratory experiments were conducted to investigate the effects of these factors on oil dispersion. The results demonstrated that the increase in temperature significantly enhanced the oil dispersion efficiency, particularly for low-viscosity oils. At 30 °C, the dispersion efficiency is 2 times higher than that at 15 °C, while salinity has no significant effect on dispersion efficiency. Nonlinear fitting results revealed an exponential increase in dispersion efficiency with the energy dissipation rate. Furthermore, partial correlation analysis was employed to examine the effects of oil density, viscosity, and surface tension on dispersion efficiency. The results indicated a high correlation between density, viscosity, and dispersion efficiency (r = −0.801, r = −0.812), whereas the correlation coefficient of surface tension was low (r = −0.286). Based on these findings, linear and nonlinear regression models were established between dispersion efficiency and density and viscosity, enabling a rough estimation of oil spill dispersion efficiency under low sea state conditions.

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Modeling Oil Droplet Formation and Evolution under Breaking Waves

Cited by 6 publications

References 9 publications

Migration Movements of Accidentally Spilled Oil in Environmental Waters: A Review

Migration Movements of Accidentally Spilled Oil in Environmental Waters: A Review

Oil Droplet Dispersion under a Deep-Water Plunging Breaker: Experimental Measurement and Numerical Modeling

Effects of Physical Properties and Environmental Conditions on the Natural Dispersion of Oil

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