Dynamics of rising CO 2 bubble plumes in the QICS field experiment
Dynamics of rising CO 2 bubble plumes in the QICS field experiment
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QICS现场实验中CO 2 气泡羽流上升的动力学
DOI：
10.1016/j.ijggc.2014.11.003
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发表时间：
2015
影响因子：
3.9
通讯作者：
Dewar M
中科院分区：
文献类型：
--
作者：
Dewar M
开发了海洋两相羽流模型，其中包括气泡尺寸分布和气泡相互作用，应用于预测最近在阿德莫克尼什湾苏格兰海域进行的 QICS 现场实验中观察到的 CO2 气泡羽流和 CO2 溶液动力学。观察结果显示，气泡形成的直径在 2 至 12 毫米之间，其中模拟中包含的相互作用使气泡羽流的结果更接近实验结果。在给定泄漏通量下，模拟表明气泡尺寸影响水柱中溶解的最大pCO2，而气泡相互作用影响垂直气泡分布。当退潮时二氧化碳注入率分别从 80、170 公斤/天增加到 208 公斤/天时，最大模拟 pCO2 从背景 360 μatm 增加到 400、427 和 443 μatm。将泄漏率增加到注入率的 100% 表明最大 pCO2 可能为 713 μatm，接近实验高泄漏部分期间观察到的平均 pCO2 740 μatm，这表明由于泄漏期间麻点上的通量和活动变化，通量可能大于估计值。
An oceanic two-phase plume model is developed to include bubble size distribution and bubble interactions, applied to the prediction of CO2bubble plume and CO2solution dynamics observed from the recent QICS field experiment in the Scottish sea at Ardmucknish Bay. Observations show bubbles form at between 2 and 12 mm in diameter, where the inclusion of the interactions within the simulations brings results of bubble plumes closer to that of the experiment. Under a given leakage flux, simulations show that the bubble size affects the maximumpCO2dissolved in the water column, while the bubble interactions affect the vertical bubble distribution. The maximum modelledpCO2increases from a background 360 μatm to 400, 427 and 443 μatm as CO2injection rates increase from 80, 170 to 208 kg/day respectively at low tide. An increase of the leakage rate to 100% of the injection rate shows the maximumpCO2could be 713 μatm, approaching the meanpCO2observed of 740 μatm during the high leakage component of the experiment, suggesting that the flux may be greater than estimated due to the varied flux and activity across the pockmarks during the leakages.