A two-phase hydraulic turbine’s performance and flow field were predicted under different Inlet Gas Volume Fractions (IGVF) with incompressible compressible models, respectively. The calculation equation of equivalent head, efficiency, loss considering the expanding work gas deduced based on energy conservation equations. Then, results, including output power fields, are compared analyzed. mode...

A clearance gap (CG) between guide vanes (GVs) and facing plates exists at both ends of a Francis turbine allows the opening angle to be adjusted for varying operating conditions. Leakage flow is induced through this due pressure difference two sides vanes. While some research works have used qualitative approaches visualize predict strength leakage vortex (LV), paper presents method quantifyin...

Sustainable electricity power supply is crucial especially for less populated rural area. Micro hydropower generation in area important providing off-grid This study aims to predict and harness from micro through conical gravitational water vortex turbine (GWVT) via SOLIDWORKS flow simulation. Conical GWVT under was designed as fully enclosed system with basin. Two different orientations were s...

In the present study, a reduced model of Francis-99 turbine was investigated numerically at part load operating condition. The consists standalone draft tube domain turbine. Numerical studies performed in past on nearly complete hydro-turbine models (inclusive spiral casing, distributor domains, runner, and tube) reportedly consist large number computational grids. This may increase costs data ...