Video recordings of jet break-up and oil droplet dissolution and fractionation during their buoyant rise through a column of synthetic sea water

In order to simulate the hydrodynamic forces on oil droplets rising through the water column over long distances (>1 km) from the seafloor to ocean surface in a finite height facility, buoyant droplets are stabilized in space by a downward flow of synthetic seawater. Drag forces on the droplet arising from the flowing water balance the buoyant body force. In the droplet frame of reference, this is approximately equivalent to the conditions experienced during free rise. The facility can alter the temperature of the synthetic seawater over time to simulate the ocean temperature gradient, but cannot replicate changes in ambient pressure. This data set contains video records of the buoyant rise of droplets. Two types of oil were used in the videos: Canadon Seco and Oseberg blend. Canadon Seco is a relatively heavy Argentine crude oil. Its properties can be found at http://www.etc-cte.ec.gc.ca/databases/Oilproperties/pdf/WEB_Canadon_Seco.pdf. Oseberg blend is a Norwegian crude oil. It is a low viscosity, light paraffinic blended oil similar in composition to the Macondo well crude oil that was released during the Deepwater Horizon incident. Experiments were run with varying amounts of Corexit 9500 dispersant mixed with the oil.

为模拟油滴在有限高度实验设施中，从海底穿越超过1千米水柱、上浮至海面过程中所受的水动力，研究人员通过合成海水向下流动，使浮升油滴在空间中保持稳定。流动水体对油滴产生的曳力与油滴所受的浮力相互平衡。在油滴参考系下，该工况近似等价于油滴自由浮升时所经历的环境条件。该实验设施可随时间调节合成海水的温度，以模拟海洋温度梯度，但无法复现环境压力的变化。本数据集包含油滴浮升过程的视频记录。实验中使用了两种原油：加拿大斯科原油（Canadon Seco）与奥斯伯格混合原油（Oseberg blend）。加拿大斯科原油为阿根廷产重质原油，其物性参数可查阅链接：http://www.etc-cte.ec.gc.ca/databases/Oilproperties/pdf/WEB_Canadon_Seco.pdf。奥斯伯格混合原油为挪威产原油，属于低黏度轻质石蜡基混合原油，其组分与深水地平线（Deepwater Horizon）事故中泄漏的马孔多（Macondo）井原油相似。实验设置了不同添加比例的Corexit 9500（分散剂）与原油混合的工况。