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为能够迅速响应突发的海上溢油事故,本文利用油粒子法建立了溢油应急模型,以预测油膜漂移轨迹和形状。为弥补油粒子法无法模拟溢油初期油膜扩展过程和无法响应溢油量变化的缺陷,本文设计实验,使用将油膜扩展与油粒子法结合的两阶段法,发现能够较好地模拟溢油扩展过程;并用分数布朗运动代替传统布朗运动模拟油粒子扩散过程,模拟结果能够响应溢油量变化,更好地模拟油膜分散破碎的过程。模型中还考虑了蒸发过程使油粒子数量减少。
In order to be able to respond quickly to a sudden oil spill accident at sea, this paper uses the oil particle method to establish an oil spill response model to predict the drift trajectory and shape of the oil film. In order to make up for the fact that the oil particle method can not simulate the initial oil film expansion process and can not respond to the changes of the oil spill volume, this paper designs experiments and uses the two-stage method that combines the oil film expansion and the oil particle method to find that the oil spill expansion And uses the fractional Brownian motion instead of the traditional Brownian motion to simulate the oil particle diffusion process. The simulation result can respond to the change of oil spill volume and simulate the process of oil film dispersion and fragmentation better. The model also considers the evaporation process to reduce the number of oil particles.