济南市华山湖水动力学试验与数值模拟研究

发布时间：2018-05-20 23:06

本文选题：华山湖 + 水动力　；参考：《山东大学》2015年硕士论文

【摘要】：物理模型试验和数值模拟是研究湖泊水动力和水质问题的有力方法,对它的研究具有重要的理论意义和应用价值。本文以济南市华山湖为研究对象,构建了华山湖水工模型,建立了二维水动力和水质模型。采用建立的模型模拟了拟建的华山湖的流场和水质变化,旨在为华山湖工程的设计和建设提供重要的科学依据。论文主要研究内容如下：(1)华山湖水工模型试验研究。根据华山湖设计方案,建造华山湖水工模型,在考虑正常工况,利用华山沟自小清河引水、山头店沟出流的条件下,模拟湖区水体流动,分析湖区水势、有无死水区域,分析湖区内的平面布置、岛屿、水工建筑物布置、驳岸形式、湖底高程设计和水体深度分布等的合理性,并提供修改意见,使之有利于水体循环流动。(2)华山湖水动力数值模拟。利用Mike21软件建立华山湖二维水动力模型,利用试验资料进行模型的率定和验证。采用建立的模型模拟计算不同工况下整个湖区的流场、水位等水力要素。根据模拟结果,对华山湖平面几何造型、水体深度分布、驳岸形式等进行修改设计,以利于湖区水体的流动,增加流动复氧和水体交换水平。(3)华山湖水质模拟。根据实测的水质资料,利用Mike 21-ECO Lab水生态模块构建华山湖水质模型,将华山湖水动力模型与水质模型进行耦合,模拟华山湖湖区水质情况并分析水质的演变趋势。(4)湖区设计方案优化。根据华山湖水工模型试验与数值模拟的结果,结合实际工程情况,提出更有利于华山湖湖区内水体流动特性的最佳布置方案,并对湖区水质提出合理建议与整治措施。
[Abstract]:Physical model test and numerical simulation are powerful methods to study lake hydrodynamic and water quality problems, which have important theoretical significance and application value. Taking Huashan Lake in Jinan as the research object, the hydrodynamic and water quality models of Huashan Lake were established. The proposed model is used to simulate the flow field and water quality change of the proposed Huashan Lake in order to provide an important scientific basis for the design and construction of the Huashan Lake Project. The main contents of this paper are as follows: 1) hydraulic model test of Huashan Lake. According to the design scheme of Huashan Lake, the hydraulic model of Huashan Lake is constructed. Under the condition of diversion of water from Xiaoqing River and discharge of Shantoudian ditch by using Huashan ditch under normal working conditions, the water flow in the lake area is simulated, the water potential of the lake area is analyzed, and there is no dead water area. This paper analyzes the rationality of the layout of the lake area, the island, the hydraulic structure, the form of the barge, the design of the elevation of the lake bottom and the distribution of the depth of the water body, etc., and provides some suggestions for modification to facilitate the hydrodynamic numerical simulation of the Huashan Lake. A two-dimensional hydrodynamic model of Huashan Lake was established by using Mike21 software, and the rate of the model was determined and verified by using the experimental data. The established model is used to simulate and calculate the hydraulic factors such as flow field and water level in the whole lake area under different working conditions. According to the simulation results, the plane geometry modeling of Huashan Lake, the depth distribution of water body and the form of barge are modified to facilitate the flow of water in the lake area and increase the level of flowing reoxygenation and water exchange. 3) the water quality of Huashan Lake is simulated. According to the measured water quality data, the water quality model of Huashan Lake is constructed by using Mike 21-ECO Lab water ecological module, and the hydrodynamic model of Huashan Lake is coupled with the water quality model. Simulation of water quality in Huashan Lake region and analysis of water quality evolution trend. According to the results of hydraulic model test and numerical simulation of Huashan Lake, combined with the actual engineering situation, the optimal arrangement scheme of water flow characteristics in Huashan Lake area is put forward, and reasonable suggestions and regulation measures are put forward for the water quality in the lake area.
【学位授予单位】：山东大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：X143;X524

【引证文献】