【作者】 陈娟；

【导师】 陆伟刚；

【作者基本信息】 扬州大学 ， 水工结构工程， 2009， 硕士

【摘要】 近年来很多城市为美化环境、改善生态,给居民提供舒适的休闲娱乐空间,兴建了许多人工景观湖,特别是在水资源比较丰富的平原地区尤为普遍。但是由于平原地区地势较为平坦,整个景观湖区的水力坡降较小,很容易出现景观湖区水动力不足、水质发生恶化等问题,因此对平原地区人工景观湖水动力的研究很有必要。本文以上海嘉定新城中心区的“海”字型人工景观湖远香湖为例,从物理模型试验和数值模型分析两个方面入手,对景观湖的水体水动力进行了试验研究,提出科学、合理的,符合水流动力要求的进水水源和最佳进出口设计方案,辅以其它措施以保证“远香湖”水体流动及水体清洁。物理模型试验对自流工况、自流改进工况、辅流工况、辅流改进工况四个大工况(共计15个分工况)的湖区流场分别进行了对比研究,确定了以辅流改进工况作为数值模拟对比验证的对象。数学模型分析利用地表水模拟软件(SMS)建立二维浅水湖泊水动力模型,对远香湖在辅流改进工况下的不同边界条件进行水动力模拟,通过对模拟结果和物理模型实验结果进行比较分析,从而得出远香景观湖的最佳工况及其流场分布情况。物理模型—数学模型相结合的研究模式和研究结果具有较强的应用价值,不仅适用于远香湖,对同类型的其它工程也有重要的借鉴价值和良好的推广应用前景。更多还原

【Abstract】 In recent years, many cities for landscaping to improve the ecology, to provide residents with a comfortable leisure space, the construction of a number of artificial lakes landscape, especially in the rich water resources are particularly common in plain areas. However, due to relatively flat-lying plain areas, the entire landscape of the hydraulic gradient smaller lake, Lake landscape is prone to lack of water power, water quality degradation occurs, so the artificial landscape of the lake plain area of research is necessary impetus.In this paper, Shanghai Jiading District, Metro Center, Chinese character"sea"-shaped artificial lake landscape far Shannon Lake as an example, from the Physical model test and numerical model analysis of two aspects of the central area of Jiading New City Lake, Yuanxiang Lake water hydrodynamic studies in order to make scientific, objective, reasonable and in accordance with the requirements of the current driving force for Chinese character "sea" of the word design, complemented by other measures to ensure that " Yuanxiang Lake " of water flow and water clean.Physical model test of artesian conditions, gravity to improve the working conditions of secondary flow conditions, flow to improve the working conditions four great working condition (a total of 15 division of the status of) the flow field of the region were studied to determine the secondary flow to improve the work conditions for the numerical simulation to verify the object of comparison.Mathematical model of the use of surface water simulation software (SMS) to establish two-dimensional hydrodynamic model for shallow lakes on the Yuanxiang Lake far to improve the conditions in the secondary flow of the different boundary conditions for hydrodynamic simulation, through the simulation results and physical model test results of a comparative analysis of the landscape so as to arrive at Yuanxiang landscape lake far the best working condition and flow field distribution.Physical model - a combination of mathematical models of test patterns and the findings have strong value, applies not only to Yuanxiang Lake, on the same type of other works also have an important reference value and good prospects for the popularization and application.更多还原