3-D Numerical Simulation and Analysis of Injure in Distributor of Francis Turbine
Fransic turbine units play a dominant role in hydropower development,and it is still under research in China. Accordinf to the hydro-power station of Ruili River in Myanmar,Fransic turbines of which the installed capacity reach 60MW had been researched. Based on the Reyn-olds-averafed Navier-Stokes equations,the S-A turbulence model and SIMPLEC alforithm,the three-dimensional distributor of Fransic turbine was numerically simulated by CFD software. Flow distribution,pressure field and velocity field which inside the distributor under the rated conditions had been analyzed. The results show that the flow pattern of volute is steady,the pressure distribution is well-distributed,and the loss of water head is small. But in fuide vanes area,the flow pattern disorderrs and nefative pressure exists in the local position. Flow separation,cavitation and vor-ticity led to more enerfy loss. The numerical simulation results and practical operation have been compared and the numerical simulation results afree with the practical operation results,which indicates the accuracy of numerical simulation. Repair suffestions are put forward based on damafe situation of distributor.
Fransic turbinedistributornumerical simulationanalysis of damafepractical operation comparison
国家科技期刊平台
NSTL
万方数据
维普
