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首页> 外文会议>Proceedings of the Ninth International Symposium on River Sedimentation vol.4 >2-D NUMERICAL SIMULATION OF FLOW, SALINITY AND SEDIMENT TRANSPORT IN THE YANGTZE RIVER ESTUARY
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2-D NUMERICAL SIMULATION OF FLOW, SALINITY AND SEDIMENT TRANSPORT IN THE YANGTZE RIVER ESTUARY

机译：长江口水流，盐度和泥沙输移的二维数值模拟

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摘要

The study on the comprehensive regulation & development of the Yangtze River estuary is one of the most important tasks attracting the public focus. Because of the large concerned area and the complex dynamic factors (runoff, tide and wave, etc.), the numerical model is becoming one of the primary methods for project planning due to its advantages of money and time saving. After the regulation put into effect, it will have influence on the natural environment of the Yangtze River estuary which include the runoff, sediment, saltwater intrusion, bed erosion and deposition, water pollution and so on. In this paper a 2-D mathematical model is established by MIKE 21 software to simulate the flow motion, saltwater intrusion and sediment transportation for the total zone at the Yangtze River estuary, which covers the Chengtong reach, the South and North Branch, the South and North Channel, the South and North Passage, and part of area out of the sea. The model is applied to simulate the flow phenomenon, saltwater intrusion and sediment transportation of the entire area with the newest hydrologic data, while under the same boundary conditions, the changes of water movement, sediment and salinity transformation are calculated in the model due to the planning project in the Yangtze River estuary. With the numerical results especially the flow movement result, this paper gives the technical support for the planning project design at the Yangtze River estuary.
机译：长江口的综合调控与发展研究是引起公众关注的最重要的任务之一。由于涉及的区域很大并且动态因素（径流，潮汐和波浪等）复杂，数值模型由于具有省钱和省时的优点而成为项目计划的主要方法之一。该规定实施后，将对长江口的自然环境产生影响，包括径流，泥沙，海水入侵，河床冲淤，水质污染等。本文利用MIKE 21软件建立了二维数学模型，以模拟长江口整个区域的水流运动，盐水入侵和泥沙输送，该区域覆盖了城通河段，南北分支，南北通道，南通道和北通道以及部分出海区域。应用该模型模拟了最新的水文数据，模拟了整个地区的水流现象，咸水入侵和泥沙输送，而在相同的边界条件下，模型计算出了水流，泥沙和盐分转化的变化。长江口规划项目。利用数值结果，尤其是水流运动结果，为长江口规划项目设计提供了技术支持。

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