HYDRAULICS MODELING OF WATER SUPPLY DISTRIBUTION FOR SELADINGAY TOWN SYSTEM UPGRADING

Abstract

The main objective of this study is to improve the performance of Seladingay town water supply distribution system and control its operation with the aid of computer analysis. The approaches adopted for the system components to perform the model, existing water distribution system and other related available data has been collected like number of population and institutions, topography of the study area, the type of water sources and its yield, collect surveying data like x, y coordinate, elevation and distance by using total station, the collected data like type of pipe material, length of pipe, demand, pipe diameter and elevation have been entered into the built model, then simulated for single period and extended period using different scenarios. The model analysis result showed the different problems of the system. These are oversized and undersized pipes, and high pressures in existing system caused by customers at too low demand have been identified and solution is established using pressure-reducing valves. Comparing representative samples of distribution main’s pressure field-test with the model-simulated values showed a reasonable and small difference to calibrate the model. Finally, 21% of the total distribution mains are modified and development of Seladingay town distribution network scenarios. The existing system has been evaluated in reality depending on the existing situation of operating the different parts of the network head loss, velocity of flow and pressure in water distribution system has been determined using Water CAD, and also the water distribution system layout has been prepared using the surveyed data.