Guide vanes are a mechanical system used to direct flow in the desired direction. At lower operating conditions, implementing guide vane draft tube of hydro-turbine can decrease excess swirl and, thus, reduce pressure fluctuations. The present study discusses numerical methodology design an effective high head Francis model turbine. method is computationally efficient and saves computational ti...

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Power production from intermittent renewable energy resources, such as solar and wind, has increased in the past few decades, leading researchers engineers to establish techniques preserve a stable electrical grid. Consequently, hydraulic turbines are being used more frequently transient operating modes regulate The present work provides comprehensive numerical study on flow field of high-head ...

Horizontal axis double-runner Francis turbines have great advantages in the development of small hydropower plants, but arrangement double runners aggravates complexity water flow between runners, and mutual influence two cannot be ignored. In order to explore relationship performance internal field investigate pressure pulsation characteristics turbine, steady unsteady numerical analysis full ...