Transient simulation of hydropower station with consideration of three-dimensional unsteady flow in turbine
会议名称：《The 26th IAHR Symposium on Hydraulic Machinery and Systems》
会议日期：2012年
学科分类：081504[工学-水利水电工程] 08[工学] 0815[工学-水利工程]
基 金：National Natural Science Foundation of China (No. 50879037) State Key Laboratory of Hydro Science & Hydraulic Engineering (2008-ZY-2) for their financial support
摘 要：To study the interaction between the transient flow in pipe and the unsteady turbulent flow in turbine,a coupled model of the transient flow in the pipe and threedimensional unsteady flow in the turbine is developed based on the method of characteristics and the fluid governing equation in the accelerated rotational relative *** loadrejection process under the closing of guide vanes of the hydraulic power plant is simulated by the coupled method,the traditional transient simulation method and traditional threedimensional unsteady flow calculation method respectively and the results are *** pressure,unit flux and rotation speed calculated by three methods show a similar change ***,because the elastic water hammer in the pipe and the pressure fluctuation in the turbine have been considered in the coupled method,the increase of pressure at spiral inlet is higher and the pressure fluctuation in turbine is stronger.