Study On Dynamic Modeling Technology Of Urban Water Supply System

This paper focused on the hydraulic modeling in water networks. Combining with GIS data management systems, an easy simulation code was programmed to practice the theoretical study. According to a real engineering project in Zhaoqing City, with the effective algorithms, a hydraulic model was set up to simulate the dynamic hydraulic conditions, monitor the water quality, operate and expand the water networks.The theoretical study of this thesis included three parts. The first part introduced the methods and techniques about urban water consumption investigations and forecasting. A new methodology to get the data patterns brought forward through the classing investigation for main consumers processed in the modeling, and furthermore, it was applied commendably in water demand data management in water supply systems of Zhaoqing City. The second part studied on the water distribution patterns and its computation for urban networks. It analyzed the influence of traditional method of flow distribution along the line, and put forward relevant deduced formula for that. Last part mainly discussed the hydraulic finite difference algorithm. With a new algorithm—Basic Loop Method—for hydraulic computation was suggested, some powerful algorithms such as compressed matrixes, Basic Loop Tree method and ameliorated square technique were introduced. Branch network was also treated technically to save the computer time.By the case study of water network simulation code, the effect and feasibility of the algorithm were proved. Form the results, this method improved the accuracy and speed of computation, the software package had high value in practice. Eventually, a simple discussion and suggestion on further work were presented.