【作者】 范学平；

【导师】 华祖林；

【作者基本信息】 河海大学 ， 环境工程， 2005， 硕士

【摘要】 目前我国近海水域污染形势严峻,为了控制近海水域的污染,必须对近海水动力特征和污染物输运过程进行模拟和复演。本文在对近年来国内外近海水域三维水流数值模拟的有关文献进行了较系统地分析研究的基础上,将英国北海模型Coherens模型应用在我国江苏省海域海州湾地区。论文首先分析总结和分析了三维水流数值模拟的研究现状,在Coherens模型基础上,建立了近海三维水流控制方程,导出σ坐标系下的三维数学基本方程组,并对控制方程采用过程分裂法进行求解。采用明渠均匀恒定流的垂向流速分布实验进行验证,对污染物输运采用不同对流格式进行计算,通过比较从而确定最佳对流格式对实际海域江苏省海州湾水流及污染物输运进行模拟,根据实测数据演示了该模型在我国海域使用的合理性和对复杂地形的适用性。该研究成果对近海水域的水污染控制具有一定的理论价值和实际意义。更多还原

【Abstract】 The water pollution of inshore region is more serious at present than before in our country. To control the water pollution of the inshore, the hydrodynamic characteristic and mass transportation process should be simulated and reproduced. Based on the detailed and abroad investigation of the inland and overseas literatures about inshore three-dimensional flow numerical simulation, the COHERENS , which is developed by the U.K community , is applied on the Haizhou Bay of JiangSu province. First, the former research tidal flow numerical modeling is commented, and the development for tidal flow numerical modeling is analyzed. The basic three-dimensional equations in σ coordinate are build from equations in Cartesian coordinate .Second, the discretization grid and different schemes are presented,and mode-splitting solution technique is applied in this model .The two theoretical cases are used to compare and analyze the computational advection schemes in the model. Finally, the tidal flow and waste mass transportation of Haizhou Bay of Jiangsu are simulated. The computational results show there are the haigh accuracy and the adapability to complex topography in the model.更多还原