Numerical Prediction Of Torque On Guide Vanes In A Reversible Pump-Turbine Turbine and pump mode operation

Andrej Lipej
2015 Journal of Multidisciplinary Engineering Science and Technology (JMEST)   unpublished
The paper presents the numerical flow analysis of the torque on guide vanes pivots in reversible pump-turbine (PT) in turbine and pump mode operation. Flow conditions in a typical PT often point out the importance of the unsteadiness of the flow, first of all because of its instability caused by the viscous effects-the boundary layer separation, vortex spreading and the influence between rotating and non-rotating parts. The detailed analysis of the time dependent distribution of torque on guide
more » ... of torque on guide vanes is presented. The numerical analysis was performed for complete pump-turbine with various turbulence models. The numerical results were compared with the experimental results.