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The transient process is the key for the design, operation and maintenance of the pipeline network system of the water supply project. This paper aims to study and develop a new type of visual numerical simulation software for the transient process of pipeline network system. Firstly, the software architecture design is illustrated. Then, three tiers of software architecture, i.e., back-tier, middle-tier and front-tier, are studied and developed. Finally, the practical application procedure of the software is illustrated and the accuracy of calculation results is verified. The results indicate that the visual numerical simulation software is designed based on C/S architecture. The software architecture contains back-tier, middle-tier and front-tier. The back-tier includes the model and the algorithm. The middle-tier realizes the decoding of the topology of the pipeline network system and the interaction between the back-tier and the front-tier. The front-tier integrates the visual interface and pre-post processing. The main interface includes a menu bar, a visual modeling area and a parameter input dialog box. The software has the features of professionalization, visualization, generalization, modularization and intellectualization. The software can calculate the transient process for the pipeline network system of both, pressure flow without the pump and pressure flow with the pump. The physical laws reflected from the calculation results are correct. The calculation results are accurate.

A Visual Software Implementation of Numerical Simulation for Transient Process of Pipeline Network System of Water Supply Project