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Numerical Modeling and Analysis of Ship Motions in Shallow Waters Using Transient Free Surface Green Functions

机译:瞬态自由表面绿色函数在浅水区船舶运动的数值建模与分析

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A numerical model for the estimation of the first and second ordermotions of a LNG carrier situated over quite shallow bathymetries isproposed. The model is developed within the context of time domain,boundary element methods that make use of the transient Greenfunctions in order to efficiently implement the free surface effects ontothe vessel’s dynamics. The seabed is defined as a second, fullysubmerged, body over which a distribution of sources is applied over itsdiscretized geometry. Such use of panels is usually associated withstrong reflection phenomena at the seabed boundaries. In order to treatthis problem, appropriately discretized local meshes need to be definedor artificial sloped extensions should be attached to the edges of thebathymetry.
机译:一阶和二阶估计的数值模型 液位相当浅的液化天然气运输船的运动是 建议的。该模型是在时域范围内开发的, 利用瞬态格林的边界元方法 功能以有效地将自由表面效果实现到 船只的动力海床被定义为第二个 淹没的,在其上应用源分配的主体 离散几何。面板的这种使用通常与 在海床边界有强烈的反射现象。为了治疗 这个问题,需要定义适当离散的局部网格 或人工倾斜的延伸部分应连接到 测深法。

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