Character Of Current And Hydraulic Calculation Simulation Under The Control Of Valves In Water Supply Pipe Network Of Cities

Water distribution network is crucial part of water supply system in city, and it is a key to judge pressure of nodes exactly. Main factor that impacts press of nodes is situation of flow. When there are valves in pipes, change of opening from valves will make variety of flow. Therefore, under adjusting of valves, studying characteristic of flow is important part in optimization of water supply system, and has applied value.Based on the existent fruit, combining mode of valves and state of current, the paper analyses the action of valves in network, including the action to flux and pressure. Furthermore, the paper reasons out the area affected by valves under some opening.During study the pipe in which has valve, the paper calculate mainly based on classical hydraulics and apply some fruit of some scholar at the same time. After counting the effect of valve in the pipe, when simulating the whole network, the paper adds valves into pipes and improves the precision of simulation.Main conclusion of the paper:1.Firstly putting the influencing length of valves into the model of water...