Small-scale modelling of the physiochemical impacts of CO2 leaked from sub-seabed reservoirs or pipelines within the North Sea and surrounding waters.

Small-scale modelling of the physiochemical impacts of CO2 leaked from sub-seabed reservoirs or pipelines within the North Sea and surrounding waters.
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对北海及周边水域海底水库或管道泄漏的二氧化碳的物理化学影响进行小规模建模。

DOI:
10.1016/j.marpolbul.2013.03.005
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发表时间:
2013
影响因子:
5.8
通讯作者:
Dewar M
Dewar M
中科院分区:
环境科学与生态学3区
文献类型:
--
作者:
Dewar M

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开发了一个双流体小尺度数值海洋模型,以模拟羽流动力学和海水酸度增加,这是由于潜在的海底水库喷发或管道破裂进入北海造成的CO2泄漏。这种规模的泄漏的位置是不可预测的;因此,多个场景是模拟的物理化学影响,测量的运动和溶解的泄漏二氧化碳。提出了气泡/液滴在海水中自由上升阻力系数的关联式,并提出了预测海底气泡/液滴初始尺寸的子模型。通过案例研究,泄漏的气泡/液滴在到达水面之前完全溶解,在那里溶液将分散到更大规模的海洋沃茨中。开发的工具可以扩展到不同的地点,以模拟突然喷发,这是至关重要的,在确定当地沃茨内的CO2的命运。
A two-fluid, small scale numerical ocean model was developed to simulate plume dynamics and increases in water acidity due to leakages of CO2from potential sub-seabed reservoirs erupting, or pipeline breaching into the North Sea. The location of a leak of such magnitude is unpredictable; therefore, multiple scenarios are modelled with the physiochemical impact measured in terms of the movement and dissolution of the leaked CO2. A correlation for the drag coefficient of bubbles/droplets free rising in seawater is presented and a sub-model to predict the initial bubble/droplet size forming on the seafloor is proposed. With the case studies investigated, the leaked bubbles/droplets fully dissolve before reaching the water surface, where the solution will be dispersed into the larger scale ocean waters. The tools developed can be extended to various locations to model the sudden eruption, which is vital in determining the fate of the CO2within the local waters.
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