An external-internal mode coupling for a 3D hydrodynamical model for applications at regional scale (MARS)
An external-internal mode coupling for a 3D hydrodynamical model for applications at regional scale (MARS)
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DOI：
10.1016/j.advwatres.2007.06.010
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发表时间：
2008-02-01
影响因子：
4.7
通讯作者：
Dumas, Franck
中科院分区：
文献类型：
--
作者：
Lazure, Pascal;Dumas, Franck
本文提出了一种在sigma坐标系下的三维模型。虽然它所基于的原则已经建立了一段时间，这种类型的三维模式分裂模型的一些原创性的方面在这里。该模型的设计是为了模拟从区域尺度到小海湾或河口的近岸尺度的各种沿海地区的流动，其中环流通常由混合过程驱动。要模拟的过程，使简化的Navier-Stokes方程的经典Boussinesq和流体静力学假设。这些方程在sigma框架内进行变换，使自由表面处理更容易。我们的论证重点是针对ADI设计的正压和斜压模态耦合的原始方面。它解释了如何获得在2D和3D方程组内计算的运输的完全一致性。最后，我们描述了在比斯开湾的区域尺度上的一个现实的配置模拟的物理过程。(C)2007爱思唯尔有限公司保留所有权利。
This paper presents a 3D model in sigma coordinates. Although the principles it is based on have been established for some time, some original aspects for this type of 3D mode splitting model are presented here. The model was designed to simulate flows in various coastal areas from the regional scale down to the inshore scale of small bays or estuaries where circulation is generally driven by a mix of processes. The processes to be modeled enable simplifications of the Navier-Stokes equations on the classic Boussinesq and hydrostatic hypotheses. These equations are transformed within a sigma framework to make free surface processing easier. The main point of Our demonstration focuses on the original aspect of the coupling between barotropic and baroclinic modes especially designed for ADI. It explains how full consistency of the transport calculated within the 2D and 3D equation sets was obtained. Lastly, we describe the physical processes simulated on a realistic configuration at a regional scale in the Bay of Biscay. (C) 2007 Elsevier Ltd. All rights reserved.