This paper examines the evolution of closing the Reynolds-averaged Navier–Stokes
equations by approximating the Reynolds stresses via the second-moment transport …

The paper critically reviews the verification and validation (VV) techniques applied to
investigate hydraulic turbines. Although there are well-established standards such as AIAA …

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 …

An experimental investigation of the cavitating turbulent flow in a simplified hydraulic turbine
was carried out to examine flow features in a wide range of speed and discharge conditions …

Experimental and numerical investigation of aerodynamics of a pneumatic nozzle for suspension
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This paper presents a systematic numerical investigation to study the effects of inlet turbulent
boundary conditions on the coupled hydrodynamics and morphodynamics computations of …

This paper discusses an innovative strategy to determine appropriate mean and fluctuating
inlet boundary conditions for the numerical flow simulations of a hydraulic turbine draft tube …

Pressure fluctuations caused by helical vortex rope in the draft tube is one of the main
reasons for the instability of Francis turbines. Previous studies showed that drilling holes on …

The paper investigates the flow structure in a tangential vortex chamber based on numerical
simulation of unsteady turbulent flow by the LES method. The swirl flow in a cylindrical …

Double-regulated Kaplan turbines with adjustable guide vanes and runner blades offer a
high degree of flexibility and good efficiency for a wide range of operating points. However …