According to the needs of the actual problems in hydraulics and water quality , analysis the relation of the junctions , channels between the hydraulics model and water quality model and the relation of the entire river networks and the local river networks , by this way adding junctions , adding or reducing rivers to the water networks and computation to entire river networks and the local river networks can be realized , 6 从河网水力、水质实际问题的需要出发，详细分析了水力、水质模型结点及河段之间的关系及河网整体与局部之间的关系，实现了任意添加结点、任意增减河道的可行性及或整体河网，或任意局部河网计算的灵活性。
Considering the different definition of the junction and channel between the model of hydraulics and water quality , the automatic unking the model of hydraulics with water quality in any complex river networks is built up , with which based on the flow pattern from computation , the problem of water quality numerical simulation in large scale complex river networks can be solved ; 5 考虑到水力模型和水质模型对结点及河道定义的不同，建立了任意复杂河网下两者间的对应关系及水力模型和水质模型的自动联结，使河网中的水质计算问题得以用本文对应的水力模型计算的流量为基础进行求解，从而解决了大型复杂河网中的水质计算问题。
Associated with the project of numerical modeling of hydraulics and water quality in hongzehu river networks in the north of jiangsu province , which founded by the department of environment of jiangsu government , two models of water quantity and water quality are developed . on the basis of the results from the numerical simulation , the assimilation capacity of the hongzehu river networks are studied 本文结合江苏省环保厅的“江苏省水环境容量研究”课题，对江苏北部洪泽湖及周边河网水系建立了河网与湖泊耦联的水力?水质模型，并在湖泊水系的水量、水质数值模拟的基础上，对该水系的水环境容量进行了研究。
Second , based on the characteristic of the receiving water studied in this paper , develope a dynamic one - dimension water quality model for nanbei river in zhangcha town of foshan city , and develope a program of water quality model based fortran powerstation . and then , calculate the concentration of codcr in receiving water using the simulation results of swmm and analyze the effect on the environment of receiving water by intercepting ratio . at last , the construction investment and operational and administrative expenses of intercepting trunk sewer 、 pumping station and sewage farm is calculated and the relation between them is discussed 其次,本文根据研究区受纳水体的特点,建立了佛山市张槎镇南北大涌的一维非稳态水质模型,相应地开发了基于fortranpowerstation平台的水质模型计算程序,并在swmm模型模拟结果的基础上,利用本文编制的水质模型程序计算了不同截流倍数时南北大涌codcr浓度的时空变化过程,分析了截流倍数对河涌水环境质量的影响。
The super entropy produce criterion is a good tool to judge the system ' s abrupt change from a lower grade to a higher one . in this paper the entropy of the urban resource - environment system was defined , and in an example of its application the super entropy produce criterion of the urban resource - environment system reflected the real developmental process of the whole system . furthermore , in this paper , a new model for the grid size optimization of the finite element method ( applied to the water quality modeling of the topographically complicated river ) was brought forward based on the maximum information entropy theory in condition that the length of gird was given 超熵产生判据为我们提供了判断系统从低级有序向高级有序突变过程的工具，本文提出了城市资源与环境系统熵的定义，在实例中的应用证明城市资源与环境系统的超熵产生判据较好地反映了整个系统的演化情况；另外，本文针对在城市复杂河道情况下，利用有限单元法求解河流水质模型时网格单元大小难确定的问题，引入网格信息熵的概念，提出了有限单元法求解河流水质模型的网格优化方法。
In this thesis , hongzehu lake and its connected river networks are regarded as a whole system , and the interactions between the lake and the river networks in the system are taken into account . two numerical models of water quantity and water quality coupling one - dimension and two - dimension are established 本文将苏北洪泽湖湖区与周边河网视为一个整体来进行研究，同时还考虑了整个体系内部相互作用的因素，建立了以preissmann四点隐式差分格式和有限体积法( fvm )为基础的一、二维耦合的水流?水质模型，并应用于洪泽湖水系的水力、水质计算。
In this paper , river water quality prediction is integrated with water pollution control measures . two parameters , water environmental capacity and pollution index are selected for pollution control measures . the objective is achieved after the development of simulation model using one - dimensional advection dispersion equation . the model algorithm and computer program is an improvement over the existing water quality models , since the model solution involves four point implicit upwind schemes for water quality prediction and pollution control measures at each grid point . model simulation results the assessment of water environmental capacity that yield the acceptable and realistic pollutants concentration in order to maintain water quality objectives . the pollution and overall pollution index of the river is suggested for integrating number of contaminants variables into one index . study provides the mathematical and scientific procedure for water quality management . the new approach is helpful for the water pollution control and to study the impacts of waste effluents on the river system for strategic planning purposes 本文将水质预测及水污染控制措施有机地结合,选取水环境容量和污染指数作为水污染控制的参数.这样,一维对流-扩散水质方程的求解除就是实现本研究目的的关键.本研究采用的模型在现有的水质模型基础上有所改进,因为其采用四点隐格式对水质进行预测,推求可接纳污染物的环境容量值及为保证水质而限定的污染物浓度值,从而制定相应的水污染控制措施.为整体考虑各种污染物的情况,建议采用河流的污染指数进而推求综合污染指数.总之,本研究为水质保护提供了科学的计算方法,该法对水污染控制及污水对河道水质的影响是实用有效的
Abstract : in this paper , river water quality prediction is integrated with water pollution control measures . two parameters , water environmental capacity and pollution index are selected for pollution control measures . the objective is achieved after the development of simulation model using one - dimensional advection dispersion equation . the model algorithm and computer program is an improvement over the existing water quality models , since the model solution involves four point implicit upwind schemes for water quality prediction and pollution control measures at each grid point . model simulation results the assessment of water environmental capacity that yield the acceptable and realistic pollutants concentration in order to maintain water quality objectives . the pollution and overall pollution index of the river is suggested for integrating number of contaminants variables into one index . study provides the mathematical and scientific procedure for water quality management . the new approach is helpful for the water pollution control and to study the impacts of waste effluents on the river system for strategic planning purposes 文摘:本文将水质预测及水污染控制措施有机地结合,选取水环境容量和污染指数作为水污染控制的参数.这样,一维对流-扩散水质方程的求解除就是实现本研究目的的关键.本研究采用的模型在现有的水质模型基础上有所改进,因为其采用四点隐格式对水质进行预测,推求可接纳污染物的环境容量值及为保证水质而限定的污染物浓度值,从而制定相应的水污染控制措施.为整体考虑各种污染物的情况,建议采用河流的污染指数进而推求综合污染指数.总之,本研究为水质保护提供了科学的计算方法,该法对水污染控制及污水对河道水质的影响是实用有效的
Using existing data and experiences , considering the character of shaying river , and based on the water quality forecast system of shaying river , in this paper , we firstly put forward a high performance parallel computing method of multi - parameter choice in china , and implement it on dawing high performance parallel computer for the choice of parameter for shaying river 文章利用已有的数据和经验，根据沙颍河具体的水质和应用特点，在国内首次提出了采用基于并行计算技术的高性能计算方法，对沙颍河支流水质模型进行多参数率定的方案，并在曙光系列并行机上得以实现。
