Hydraulic Calculation Software Development of Water Supply Networks Based on AutoCAD

Based on AutoCAD platform, this paper develops hydraulic calculation software of urban water supply networks by using Visual LISP. It consists of five modules, such as numerical calculation module, display module, query module, analysis module. The numerical calculation module included two parts: demand allocation and hydraulic calculation. The model can get the data and graphic information of water networks directly from the graph by using the developing ability of Visual LISP. With the knowledge of Graph Theory, the model can automatically get the incidence matrix, thus realize the hydraulic calculation. To a certain extent, it brought convenience for the hydraulic calculation. Node (H) equations method is used in the hydraulic calculation. The application on an urban water distribution network showed that the software was feasible. Therefore, it is very useful and can become an effective tool in hydraulic simulation of water supply networks.