摘要
为制订长江口枸杞岛附近海域突发溢油事故的应急处理方案,利用实测地形数据建立了枸杞岛附近海域二维潮流数学模型,并根据实测资料对该潮流模型模拟的潮位、流速、流向进行了验证。验证结果表明,该潮流数学模型能较好地反映枸杞岛附近海域的潮流运动情况,可以作为MIKE21 SA溢油模块的水动力基础数据。基于欧拉-拉格朗日"油粒子"理论,综合考虑油膜扩散、漂移、风化等过程,应用MIKE21 SA模块建立了枸杞岛附近海域二维溢油扩散模型,并模拟了8种不同工况组合下的溢油油膜漂移路径和扫海面积。结果分析表明,潮流场、风场、溢油时刻对油膜的漂移轨迹和扫海面积都有影响,其中溢油时刻对油膜的漂移路径影响最大。
In order to draw up an energency treatnent plan for oil spill accident in the sea area near Gouqi Island in Yangtze River estuary,by using the neasured terrain data,a 2D nathenatical nodel of tide flow near the island is established and the calculated tide level,tide velocity,tide flow direction by the nodel is validated according to the neasured data,which show that the nodel can reflect the tide flow trend near the island and can be used as hydrodynanic basic data for MIKE21 SA spill nod-ule. Based on Euler - Lagrange ＆quot;oil particles＆quot; theory,and with consideration of the filn diffusion,drift,weathering processes, by using MIKE21 SA nodule,a two dinensional oil spill diffusion nodel is established and oil spill filn＆#39;s drift paths,sweeping sea area in eight different cases are sinulated. The analysis of sinulation results show that the tide and wind fields as well as oil spilling tine have influences on the filn＆#39;s paths and sweeping sea area,in which,oil spilling tine is the nost inportant factor.
出处
《人民长江》
北大核心
2014年第21期65-69,共5页
Yangtze River
关键词
潮流数学模型
溢油
欧拉-拉格朗日理论
扫海面积
溢油路径
MIKE21 SA
tide flow nathenatical nodel
oil spill
Euler - Lagrange theory
MIKE21 SA
sweeping sea area
spill path
