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引黄工程水力学仿真研究与设计
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摘要
山西是全国以至全世界水资源奇缺的地区之一,万家寨引黄入晋工程是一个牵系全国的大工程,工程规模仅次于三峡和小浪底,是中国目前在建的第三大水利工程;是从根本上解决山西水资源紧缺、推动山西能源重化工基地全面发展、振兴山西经济的国家重点工程。本文在系统地描述和分析了整个工程后,运用面向对象的分析和设计方法,分别从水力学角度和工程角度设计了水力学仿真系统的对象模型;建立了泵系统、管道和阀门的水力学仿真计算的数学模型。在此基础上,给出了管道、泵系统数值计算流程和阀门关闭曲线的抛物线插值算法的流程。在Windows XP环境下,以上述仿真计算模型和算法为基础,使用Visual C++语言,编程实现了引黄工程管道流和泵系统水力学仿真计算程序,运用实际数据对管道流和泵的水力学瞬变特征进行了仿真计算,并在对仿真系统分析的基础上,设计并编写了部分适合于此水力学系统仿真的软件结构和功能模块
    
    太原理工大学硕士研究生学位论文
    类。文中结合多计算机系统的结构特点和水力学仿真计算的特
    点,提出了以星型拓扑结构为并行仿真计算机系统拓扑更有利
    于改善水力系统仿真并行计算性能,分析和确定了以中央结点
    集中“收集一广播”的通信方式进行水力系统并行仿真计算过程
    中的任务通信方案,将水力学仿真计算这样的串行计算问题转
    变为串并行混合计算的问题,根据水力学仿真结构和模块化仿
    真模型的特点,提出了同步并行仿真计算方案,并据此设计了
    高效的同步并行仿真算法,这样的算法可有效提高仿真速度,
    实现传统仿真方法无法实现的实时仿真。通过对理论和实际仿
    真计算结果的分析,可以得出本文所进行的对象的设计,采用
    的数学模型、软件分析设计和数值计算方法是可靠的。因此计
    算得到的系统特性是精确可靠的,并且与实际发生的工况基本
    一致。
Shanxi is one of the worldwide most serious regions in water shortage. The Wanjiazhai Project to Divert Yellow River Water to Shanxi Province is a national key project and the 3rd irrigation works inferior to the project of Three Gorges and Xiaolandi. It will make up the water shortage in Shanxi Province and stimulate the all-round development of the energy, heavy and chemical industries there. Based on analysis of the whole-system, this paper puts forward the object models of the hydraulics computer simulation system from the point of view of hydraulics and project in the way of object-oriented; At the same time, the hydraulics mathematical models are designed and created in terms of the principles of pump, conduit and valve system. Consequently, it is put forward that the flow of numerical calculation of the conduits and pump system, and parabola-insertion algorithm of the flow. Under the environment of Windows XP, according to the model of the hydraulics computer simulation and the algorithm, the hydrauli
    cs computer simulation program has been programmed and implemented with MS VC++, which is able to simulate the hydraulics characteristics of a series of transient working conditions. With this program, calculation has been made by applying actual data. After the analysis of the simulation system, structure of software and model of function are designed and
    
    
    created. Considering the characteristics of multicomputer systems and the algorithm of hydraulics system simulation, the paper puts forward the STAR topology of the connection amongst multiple processors since the root processor of the star could implement our designed collect-assemble-broadcast communication strategy so as to efficiently reduce the communication delay. Thus this serial computing problem is converted into serial-parallel-hybrid computing problem. Consequently, a parallel simulation algorithm is designed according to structure of hydraulics simulation and characteristic of simulation model which can effectively speed up the simulation. After this scheme is applied, the real-time simulation of hydraulics system is realized which traditional methods could never reach. Theoretical analysis and result of practical numerical calculation indicates that mathematical models , design method of software and numerical calculation methods in the paper is exactly reliable. So the characteristics of system
     are exactly reliable by calculation. And it tallied with the actual working conditions of the system.
引文
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