CFD analysis of the needle tip angle in Pelton injector on jet quality for the power generation

Fossil fuels are energy sources that supply a large part of the world's generation. However, they produce greenhouse gases such as carbon dioxide (CO2), nitrogen oxide (NOx) and particulates increase global warming. For this reason, other forms renewable hydropower have begun to be implemented through turbomachinery Pelton turbines, which significantly reduce these emissions since highly efficient turbines based on use natural resources (water). mainly three components for their operation, injector, bucket wheel. The injector is an important component in transformation turbines. Although analyze its behavior, it possible fluid dynamics (CFD) software predict trajectory flow solid or free surface. objective work by means computational incidence length needle tip angle turbine generated power. this, ANSYS 2020R2 analysis was used study how variation influences volume (VOF) method, starting from generation commercial model with 60° two (2) geometries 55° 75° respectively. Numerical results show better performance 96 % lower 94.1 95.5 respectively, whereby steeper angles achieve higher performances. In summary, present pretends power generation, face phenomena occurred transfer. each configuration must tested practice