Botero Herrera, Francisco Javier2014-07-112012621CD G993http://hdl.handle.net/10784/2814A non-conventional tufting visualization method along with an image processing development and specific applied technique adapted to the flow conditions is proposed and implemented on a reduced scale model of a Francis-type reversible pump-turbine in three different turbine stages such as turbine mode, runaway mode and turbine break mode, in order to visualize rotating stall phenomenon -- Fluorescent monofilament wires along with high speed image processing and pressure sensors were installed in the narrow and vane less gap between the impeller blades and guide vanes -- Pressure fluctuations were analyzed along with tuft visualization to describe the flow with and without rotating stallspaIngeniería MecánicaDinámica AplicadaTurbinasTesis. Maestría en Ingenieríainfo:eu-repo/semantics/masterThesisinfo:eu-repo/semantics/openAccessTURBINASSISTEMAS DE CONTROL LINEALROTORES - DINÁMICABOMBAS (MÁQUINAS)BOMBAS CENTRÍFUGASVIBRACIÓNTurbinesLinear control systemsRotors - dynamicsPumping machineryCentrifugal pumpsVibrationAcceso abierto2014-07-11Guzmán Díaz, Sebastián