Abstract: Abstract. The growing integration of renewable energy, especially wind power, in urban settings necessitates the optimization and performance enhancement of small-scale vertical axis wind turbines (VAWTs). The major ...

Abstract: Francis turbine working at off-design operating condition experiences high swirling flow at the runner outlet. In the present study, a high head model Francis turbine was experimentally investigated during load rejection, ...

Abstract: Off-design operation leads to the development of flow instabilities like vortex breakdown phenomenon which manifests as an enlarged vortex core in the draft tube at high load operating conditions. These flow instabilities ...