We report on experimental study of flow and pressure pulsations in draft-tube of a laboratory
air model of Francis-99 hydro-turbine operating over a broad range of regimes employing a …

We report on the experimental study of a precessing vortex core (PVC) in an air model of a
Francis turbine. The focus is placed on the modal decomposition of the PVC that occurs in …

This paper presents an active method to control the pressure fluctuations induced by the
rotating vortex rope (RVR) in a Francis hydro turbine model under part load conditions. The …

We study the flow in a model Francis-99 draft tube for partial load conditions using Large-
eddy simulation. The swirl is produced by the runner rotating with a constant angular …

Swirling flow with the formation of a precessing vortex core (PVC) in the draft tube model of a
hydroturbine was studied. Experiments were performed on an aerodynamic setup under …

Experimental study of flow in the draft-tube cone of a laboratory air model hydro-turbine was
performed. The evolution of the integral swirl number varied from BEP regime to deep part …

This paper describes the results of experimental studies of a flow using the prototype of a
propeller-type microhydraulic turbine. The tests are carried out on a testbed in which …

Results are presented of experiments carried out using an air model of a hydraulic turbine
draft tube. These included velocity measurements in the conical part of the tube using a …

The utilization of machine learning in finding decisions of engineering problems is the
optimal way. This study presents a new tool that applies machine learning algorithms, to …

Featured Application The identified features of the flow for different cases are necessary for
predicting the parameters of micro hydraulic turbines and developing recommendations for …