Hydraulic Characteristics Study Of Diversion Canal Water Entrance By Numerical Simulation For Medium And Small Pumping Stations

The Pump inlet is the first line of mark for water flow into the pump station, have an influence on stable water flow,Especially for stable pumping station into the pool of water, Ensure the wate stability into the pumping station,ect, and have very important significance to improve the operational efficiency for pumping station. There is no doubt that the best pattern is the front inflow of Pumping Station form all patterns about water inlet.But most of pumping station was built in the river side,this is means that the river wate into pumping station must passes through side-inlet. So is very common that construction of medium and small pumping stations apply side-inlet way. Research and analysis the side-inlet pumping station all-sided,based on the large computational fluid dynamics doftware CFX, adopting with3D mumerical simulation technique.In accordance with the study indicste side-inlet on the influence of river water and side-inlet nearwater diversion channels,then to do optimization model for research. Reveal water entrance Impact and influence scope on diversion canal about hydraulic characteristics for diversion canal water entrance,Then to do optimization model for researchFor three-dimensional turbulent numerical simulation research on medium and small pumping stations with diversion canal water entrance apply RNG k-ε Turbulent model,the basic model and flow field of diversion canal water entrance were accurately predicted.Focuses on analyzing the hydraulic performance about river water near and inside side-inlet influence by sede-inlet.Comparison and analysis The hydraulic performance impacted by different deep-wide and angle about diversion canal water entrance, focus on qualitative analysis the length with the form o fwater flows through water entrance to achieve smooth. Analyzed the relationship after the water flows through the water entrance into the pool to smooth of length and the form of water entrance.By studying the different deep-wide and angle about diversion canal water entrance,also comparing the results with basic flow pattern.Expound influence on river water near and inside diversion canal water entrance by different deep-wide and angle about diversion canal water entrance.Combined with the simulation results of the streamline and velocity chart in layer,middle, surface.Analysis of relationship between diversion canal water entrance hydraulic characteristicswith deep-wide and angle. According to the results conclusion the more suitable deep-wide and angle about diversion canal water entrance. Combination with the engineering practice, Numerical simulation study diversion canal water entrance about the pumping stations built on narrow river and blind river.Through of numerical computation,and then analysis the results of the river water influence by diversion canal water entrance.on the basis of river water backflow into the side-inlet, To improve the hydraulic optimization of diversion canal water entrance forms.Simulation and analysis current characteristic based on the chinese characters eigh and bellmouth isde-inlet model.The results show that bellmouth isde-inlet model more conducive to stability the water.