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首页> 外文期刊>Journal of oceanography >A Terrain-Following Crystal Grid Finite Volume Ocean Circulation Model
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A Terrain-Following Crystal Grid Finite Volume Ocean Circulation Model

机译：地形跟随晶格有限体积海洋环流模型

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摘要

A three dimensional hydrostatic finite volume ocean model has been developed to solve the integral dynamical equations. Since the basic (integral) equations are solved for finite volumes rather than grid points, the flux conservation is easily enforced, even on arbitrary meshes. Both upwind and high-order combined compact schemes can be incorporated into the model to increase computational stability and accuracy. This model uses a highly distorted grid system near the boundary. The lateral boundaries of each finite volume are perpendicular to x and y axes and the two vertical boundaries are not purely horizontal. Four types of finite volumes are designed to follow the terrain with four (Type-A), three (Type-B), two (Type-C), and one (Type-D) vertices in the lower surface. Such a terrain-following grid discretization has superior features to z- and σ-coordinate systems. The accuracy of this model was tested.
机译：为了解决整体动力学方程，建立了三维静水有限体积海洋模型。由于基本（积分）方程是针对有限体积而不是网格点求解的，因此即使在任意网格上，通量守恒也易于实施。上风和高阶组合紧凑方案都可以纳入模型，以提高计算的稳定性和准确性。该模型在边界附近使用高度失真的网格系统。每个有限体积的横向边界垂直于x和y轴，并且两个垂直边界并非纯粹是水平的。设计了四种类型的有限体积以跟随地形，并且在下表面具有四个（Type-A），三个（Type-B），两个（Type-C）和一个（Type-D）顶点。这样的地形跟随网格离散化具有优于z坐标系和σ坐标系的特征。测试了该模型的准确性。

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