摘要
本模式为基于Lagrange框架下的粒子追踪方法数值模拟海上溢油的三维输运模式,着重从非线性理论、随机性理论来建立分析污染物粒子的运动过程。在具体的数值求解过程中,采用Langevin方程与Fokker-Planck方程相结合,有效地解决了具有随机性的粒子运动过程;另外模式也考虑了污染物附着在岸上以及沉降到海底等过程。通过数值模拟结果与卫星遥感监测资料的比较,表明该模式已取得较好的模拟效果。
A 3-D transport model of oil spilled at sea is developed based on the particle tracking technology in Lagrange scheme. The movements of contaminant particles are described with nonlinear and random theories. By the combination of Lagrange equation with Fokker-Planck equation in conservation equation, the transport action of random-walk particles can be simulated, in the model the interaction of contaminants with shoreline and their sedimentation are also considered. Comparisons between the numerical simulation results and the data from remote sensing satellite indicate that this model can give a better simulation results.
出处
《中国航海》
CSCD
北大核心
2008年第3期284-288,共5页
Navigation of China
关键词
环境工程学
溢油
粒子追踪
马尔可夫过程
数值模拟
environmental engineering
spilled oil
particle tracking
markovian process
numerical simulation
