涠洲岛附近海域溢油数值模拟  

The Numerical Simulation of Spilled Oil in Weizhoudao Sea Area

作　　者：杨毅[1] 娄安刚[1] 徐艳东[2] 匡良[1] 

机构地区：[1]中国海洋大学环境科学与工程学院,山东青岛266100 [2]山东省海洋水产研究所,山东烟台264006

出　　处：《海岸工程》2008年第4期1-10,共10页Coastal Engineering

摘　　要：采用潮流控制方程和湍封闭方程构建完整的三维浅海潮波定解方程组,建立涠洲岛附近海域的三维潮流数值模型来计算涠洲岛附近海域的潮流和潮位变化情况,采用大海域计算得出的调和常数值作为开边界的输入值,从潮位验证、潮流验证和流场的变化规律等多方面情况看,计算结果与实际监测符合良好,具有较高的精确度,模拟计算结果较真实地反映了涠洲岛附近海域的潮位变化和潮流运动状况。在潮流模拟验证正确的情况下,建立溢油预测模型,采用欧拉-拉格朗日追踪方法,进行油膜中心轨迹的预测,并预测了油膜漂移的扩展面积、扫海面积和残留量随时间的变化值。By means of the equations for governing tidal currant and the closure equations for turbulence a set of shallow water equations are formed for determining the solution of 3-dimonsional tidal wave problem, and the corresponding numerical model is used to compute the tidal current and sea-level variations in Weizhoudao sea area with their open boundary conditions calculated and output from the open oceanic model. In view of the simulation ensured from the verifications of the tidal current and level and the variations, it is learnt that the modelling results are consistent with the observations and quite accurate. The tidal fluctuations and motions in the sea area are better reflected in the results. Then a forecasting model for spilled oil is established and an Euler-Lagarangian tracing method is used to predict the displacing trajectory of the oil-film centre, the film-spreading area, the area through which the oil film has passed, and the oil residual.

关 键 词：三维潮流模型 溢油 轨迹 扫海面积 

分 类 号：X145[环境科学与工程—环境科学]