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physics.flu-dyn2026
Linear Stability and Structural Sensitivity of a Swirling Jet in a Francis Turbine Draft Tube
Lester Corpin Toledo, Artur Gesla, Eunok Yim
Motivated by the need to better understand flow unsteadiness in hydraulic turbines, we perform a local linear stability and adjoint-based sensitivity analysis of the turbulent swir…
physics.flu-dyn2026
Vortex breakdown in a hydro turbine draft tube swirling jet
Artur Gesla, Eunok Yim
The swirling flow in a Francis type hydropower turbine is known to be susceptible to the formation of a large helical structure, commonly referred to as a vortex rope. This vortex…