文献类型：期刊文献

中文题名：湛江毗邻海域流场模型在海上搜救中的应用

英文题名：A flow field model and its application in search and rescue operations in adjoining sea area of Zhanjiang

作者：陈达森[1];严金辉[2];毕修颖[1]

机构：[1]广东海洋大学航海学院,广东湛江524025;[2]国家海洋局南海海洋工程勘察中心,广东广州510300

年份：2008

卷号：27

期号：1

起止页码：16

中文期刊名：热带海洋学报

外文期刊名：Journal of Tropical Oceanography

收录：CSTPCD、、北大核心2004、CSCD2011_2012、北大核心、CSCD

基金：湛江市科技招标项目(2005-1)

语种：中文

中文关键词：湛江海域;流场模型;搜救

外文关键词：sea area off Zhanjiang coast; flow field model; search and rescue

中文摘要：依据《海岸与河口潮流泥沙模拟技术规范》建立湛江毗邻海域二维流场模型方程组[模拟区是(105°38′E、15°56′N)、(105°38′E、22°14′N)、(113°24′E、22°14′N)、(113°24′E、15°56′N)四点连线范围];采用"等步长"差分网格分割方法和ADI方法数值离散方程组,在确定了边界条件和初始值后,用追赶法求解。模拟出本研究海区的3种流场:一是潮流场;二是考虑了定常风作用后的流场;三是海上遇险目标漂流场。结果为该海域遇险目标搜寻与救助提供了技术支持。

外文摘要：By a standardized method of simulating tidal currents and sand movements off a coast or at an estuary, a two-dimensional mathematical model is established in the form of a set of equations to simulate the conditions in the flow field off Zhanjiang coast. The sample area at sea is bounded by four points： （105°38′E, 15°56′N）, （105°38′E, 22°14′N）, （113°24′E, 22°14′N）, （113°24′E, 15°56′N）. By a differential gridding method with equal intervals and a set of discrete equations of ADI method, the equations are solved using a scheme termed alternate direction iterative after setting the boundary conditions and initial values of those variables. Three types of conditions at this sea area are simulated. One is the tidal current field, another is the current field under the influence of a constant wind--the superposition of a wind-effected flow on the tidal current, and the other is the seawater movement with the target object in distress at sea. The drifting movement of the target object in distress at sea is the resultant effect of three factors-- tidal current, wind-effected sea flow, and self-motion under wind pressure. The results will provide technology support for search and rescue at sea off Zhanjiang coast