Water Flow Characteristic And Geometry Size Optimization Of Intake Forebay Of The Circulation Water Pump Station

The intake forebay of the pump station is an important part of circulating water system,provide a good flow pattern for the pump station? to ensure the flow uniform in the Water-obsorbing room of circulating water pump room, reach water conditions of of pump normal operation. Water flowing state of the intake forebay of the pump station is very important in water pump can work normally, improve the efficiency of the pump and extend the service life of the pump.However,in the practical engineering projects, due to some restrictions, such as the problem of funds and the problems of the restrictions,the intake forebay of the pump station can not be designed according to the size of the ideal,the adverse flow patterns occur easily in the fore bay,such as bias current,circumfluence which gose out of wall and vortices,which can affect the flow pattern in suction chamber.So,it is very important for understand the effects of previous pool size water flow regime.Combined with a power inlet circulating water pump design, according to the principle of gravity similar, Establish the pumping station of inlet physical model, and selection of different groups of five previous pool length, as a series of tests, Obtains the best pool length of Meet flow condition, The proposed control size of The intake forebay of the pump station.In order to compared with the physical model experiment verification results, this paper established the3d flow model based on RNG k-ε model, use has some physical model test data to verify calculation of the established mathematical model. The results show that the established mathematical model has good simulation ability, can the expansion of the related research. Based on the progress of numerical simulation about the diffusion angle of anterior pool optimization numerical simulation, through to the flow regime calculation about different diffusion angle in the the intake forebay of the pump station, get the flow characteristics of3d in the he intake forebay of the pump station, analyzes the situations of different diffusion angle, best pool length of meet flow condition, proposed to judge the standard of pool length of different diffusion angle, provide a reference basis for similar engineering, through the experiment with the existing results, show that the calculation results are reliable.