麒麟寺水电站泄洪闸泄流三维数值模拟

发布时间：2018-04-18 21:17

本文选题：数值模拟 + 泄洪闸泄流　；参考：《西北农林科技大学》2017年硕士论文

【摘要】：在水电工程建设中,经常会遇到泄水建筑物泄流能力、体型优化等问题,通常这些问题是通过物理模型试验来解决的。而近些年来,随着计算技术的日趋成熟和计算机性能的不断提高,越来越多的水利工作者将计算机这一工具应用于水利工程的数值计算。数值模拟花费少、速度快、信息完整等优点逐步显示出来,并逐渐被工程界所接受,成为物理模型试验的重要补充手段。本文以白龙江麒麟寺水电站工程为研究对象,根据设计者提供的基本资料对其泄流过程进行数值模拟,主要得到以下成果:(1)本文介绍了数值模拟的相关理论,总结了数值模拟方法的研究进展,通过CAD软件建立了三维数值模拟区域,利用Gambit进行了网格划分,使用FLUENT商用软件,应用Standard k-ε紊流数值模型封闭Reynods方程,采用VOF方法追踪自由水面、SIMPLE算法来进行压力校正,对水电站的泄流进行了三维流场数值模拟。(2)将计算得到的各工况下,泄洪闸的泄流能力、水面线、流速及压力分布等水力特性值与试验数据对比发现,两者基本吻合。因此,数值模拟可以为泄水工程建筑物的设计提供可靠的分析依据。应用成果信息,使水工设计提高效率和节省费用并为物理模型试验提供前期预测和指导。
[Abstract]:In the construction of hydropower projects, problems such as discharge capacity and shape optimization of drainage structures are often encountered, which are usually solved by physical model tests.In recent years, with the maturation of computing technology and the continuous improvement of computer performance, more and more water conservancy workers apply this tool to the numerical calculation of water conservancy projects.The advantages of numerical simulation, such as low cost, high speed and complete information, are gradually shown, and gradually accepted by the engineering community, which has become an important supplementary means of physical model test.This paper takes the project of Kirinsi Hydropower Station in Bailong River as the research object, carries on the numerical simulation to its discharge process according to the basic data provided by the designer, and obtains the following results: 1) this paper introduces the relevant theory of numerical simulation.In this paper, the research progress of numerical simulation method is summarized. The three-dimensional numerical simulation region is established by CAD software, the mesh is divided by Gambit, the Standard k- 蔚 turbulent numerical model is used to close the Reynods equation, and the FLUENT commercial software is used.The VOF method is used to track the free water surface simple algorithm for pressure correction, and the three dimensional flow field numerical simulation of hydropower station discharge is carried out. The discharge capacity and water surface line of the sluice are calculated under various working conditions.The comparison of the hydraulic characteristics such as velocity and pressure distribution with the experimental data shows that the two are in good agreement with each other.Therefore, the numerical simulation can provide reliable analysis basis for the design of drainage engineering buildings.By using the result information, the hydraulic design can improve the efficiency and save the cost, and provide early prediction and guidance for the physical model test.
【学位授予单位】：西北农林科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TV135.2

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