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Diffusion Characteristics and Droplet Size Distribution of Oil Spill from Micro-Hole in Underwater Pipelines
Author(s): 
Pages: 59-64
Year: Issue:  6
Journal: Ocean Technology

Keyword:  水下管道微孔溢油扩散特性尺寸分布实验研究;
Abstract: 对水下油管微孔泄漏进行了有关数值模拟及实验研究.首先采用计算流体动力学(CFD)万法对微孔泄漏后的油气两相混合物的运动特性进行了数值模拟,模拟结果表明随着含气率的增大,溢油在海表面横向扩散范围逐渐增大,且其变化接近线性分布;泄漏速度对溢油羽射流形态影响较大,随着泄漏速度的增大,水下溢油羽射流的截面宽度逐渐增大,油滴上升速度较快,且油滴直径不断减小;其次,对泄漏后的油滴尺寸进行了实验测试,实验结果表明泄漏量对油滴尺寸大小有较大的影响,随着泄漏量的增大,油滴获得了更大的出流速度,形成更多更小的油滴,当泄漏量增大到一定程度时油滴逐渐趋于雾化.
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