离岸式人工岛内河道水体湍流数值模拟与换水研究
发布时间：2018-10-29 23:00
【摘要】：双鱼岛（招商局漳州开发区人工岛）填海工程是经国务院审批通过的国内首个完全用于旅游、居住和生态开发建设的大型离岸式人工岛，与传统的大面积、平推式围填海方式所造成的生态破坏、海洋污染、价值单一不同，人工岛在区域规划中引入水体循环系统，两条交相呼应的海豚状平面形态构成了内河道亲水景观。人工岛内河道两端与外海衔接处设有闸门，在内河道常年保持有清新的内河水，，从而构成人工岛独特的河道景观和环境保障。为了控制内河水位，保证水质，需优化开启河道两端闸门时机，利用内外水位差进行水体的自然交换，使得内河水体与外来海水水体掺混充分，将污染物尽可能多的带出岛外，增强人工岛内河道水体自净能力。 本文以福建人工岛填海工程为例进行内河道换水计算研究，利用大型流体力学计算软件FLOW-3D，结合VOF方法，利用实际地形数据建立了人工岛填海工程内河道三维几何模型，根据已有的外海潮位等水文信息为边界条件，对人工岛内河道水体进行了三维非稳态数值模拟，数值模拟与物理模型结果基本一致。在此基础上进行了人工岛内河道换水的研究，确定内河道水位与外海潮位变化的同步性，得到了换水时间、不同情况下水体交换率和内河道水体流态图，并推荐了最佳的换水方案。研究方法和结论对人工岛的建设和具体管理具有实用价值。 本文的研究成果可用于相关工程，三维数值模拟可补充物理模型试验的结果，为人工岛内河道水体的水力学特性的研究提供参考，对工程的实践和应用有很好的参考价值，对类似的工程具有一定的指导作用。
[Abstract]:The Beas Yu Island (artificial Island in Zhangzhou Development Zone of China Merchants Bureau) is the first large offshore artificial island in China that has been approved by the State Council and approved by the State Council for tourism, residential and ecological development. The ecological damage, marine pollution and single value caused by the flat push reclamation are different. The artificial island introduces water circulation system in the regional planning, and two corresponding dolphin plane forms the hydrophilic landscape of the inner channel. The two ends of the artificial island are connected with the open sea and there are gates at the end of the artificial island, and the inner channel keeps fresh and fresh water all the year round, thus constituting the unique river landscape and environmental protection of the artificial island. In order to control the water level of the inland river and ensure the water quality, it is necessary to optimize the opening of the gate at both ends of the river, and make use of the difference of the inside and outside water level to carry out the natural exchange of the water body. Enhance the self-purification ability of river water in artificial island. This paper takes the artificial island reclamation project in Fujian as an example to study the calculation of water exchange in the inner channel. By using the large-scale hydrodynamic calculation software FLOW-3D, and the VOF method, the three-dimensional geometric model of the inner channel of the artificial island reclamation project is established by using the actual topographic data. According to the existing hydrological information such as tidal level in the open sea as the boundary condition, the three-dimensional unsteady numerical simulation of the channel water in artificial island is carried out. The results of the numerical simulation are in good agreement with the physical model. On the basis of this, the water exchange in artificial island is studied, and the synchronism between the water level of the inner channel and the tide level outside the sea is determined, and the water exchange rate and the flow pattern of the inner channel under different conditions are obtained. And recommended the best water exchange scheme. The research methods and conclusions are of practical value for the construction and management of artificial islands. The research results in this paper can be used in related engineering, 3D numerical simulation can supplement the results of physical model test, and provide a reference for the study of hydraulic characteristics of river body in artificial island, which has a good reference value for engineering practice and application. It has certain guiding function for similar projects.
【学位授予单位】：天津大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TV133
本文编号：2299082
[Abstract]:The Beas Yu Island (artificial Island in Zhangzhou Development Zone of China Merchants Bureau) is the first large offshore artificial island in China that has been approved by the State Council and approved by the State Council for tourism, residential and ecological development. The ecological damage, marine pollution and single value caused by the flat push reclamation are different. The artificial island introduces water circulation system in the regional planning, and two corresponding dolphin plane forms the hydrophilic landscape of the inner channel. The two ends of the artificial island are connected with the open sea and there are gates at the end of the artificial island, and the inner channel keeps fresh and fresh water all the year round, thus constituting the unique river landscape and environmental protection of the artificial island. In order to control the water level of the inland river and ensure the water quality, it is necessary to optimize the opening of the gate at both ends of the river, and make use of the difference of the inside and outside water level to carry out the natural exchange of the water body. Enhance the self-purification ability of river water in artificial island. This paper takes the artificial island reclamation project in Fujian as an example to study the calculation of water exchange in the inner channel. By using the large-scale hydrodynamic calculation software FLOW-3D, and the VOF method, the three-dimensional geometric model of the inner channel of the artificial island reclamation project is established by using the actual topographic data. According to the existing hydrological information such as tidal level in the open sea as the boundary condition, the three-dimensional unsteady numerical simulation of the channel water in artificial island is carried out. The results of the numerical simulation are in good agreement with the physical model. On the basis of this, the water exchange in artificial island is studied, and the synchronism between the water level of the inner channel and the tide level outside the sea is determined, and the water exchange rate and the flow pattern of the inner channel under different conditions are obtained. And recommended the best water exchange scheme. The research methods and conclusions are of practical value for the construction and management of artificial islands. The research results in this paper can be used in related engineering, 3D numerical simulation can supplement the results of physical model test, and provide a reference for the study of hydraulic characteristics of river body in artificial island, which has a good reference value for engineering practice and application. It has certain guiding function for similar projects.
【学位授予单位】：天津大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TV133
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