期刊
GEOPHYSICAL RESEARCH LETTERS
卷 45, 期 5, 页码 2396-2403出版社
AMER GEOPHYSICAL UNION
DOI: 10.1002/2017GL076606
关键词
Deepwater Horizon; Oil Spill; Churn Flow; Oil and Gas; Computational Fluid Dynamics; Turbulence Energy
资金
- Gulf of Mexico Research Initiative through the Consortium CARTHE II
- Department of Fisheries and Ocean Canada (DFO)
Improved understanding of the character of an uncontrolled pipeline flow is critical for the estimation of the oil discharge and droplet size distribution both essential for evaluating oil spill impact. Measured oil and gas properties at the wellhead of the Macondo255 and detailed numerical modeling suggested that the flow within the pipe could have been churn, whereby oil and gas tumble violently within the pipe and is different from the bubbly flow commonly assumed for that release. The churn flow would have produced 5 times the energy loss in the pipe compared to bubbly flow, and its plume would have entrained 35% more water than that of the bubbly flow. Both findings suggest that the oil discharge in Deepwater Horizon could have been overestimated, by up to 200%. The resulting oil droplet size distribution of churn flow is likely smaller than that of bubbly flow.
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