This study investigates the influence of roughness on hydrodynamic performance, especially for hub vortex—and, hence, vortex cavitation—of a benchmark propeller operating under uniform flow conditions using RANS method. The Schnerr–Sauer cavitation model is also used modelling and off blades. In order to include effects in numerical calculations, experimentally obtained functions were incorpora...

Cavitation and cavitation erosion are complex hydrodynamic behaviors that significantly influence the stability reliability of pumping units in aerospace navigation power systems, hydraulic engineering, other fields. Studies on have primarily heavily focused collapse multiple bubbles; understanding movement bubbles is important for research. In this study, process near-wall double-cavitation wa...

The interaction of a laser-induced cavitation bubble with an elastic boundary and its dependence on the distance between bubble and boundary are investigated experimentally. The elastic boundary consists of a transparent polyacrylamide (PAA) gel with 80% water concentration with elastic modulus E = 0.25 MPa. At this Evalue, the deformation and rebound of the boundary is very pronounced providin...

This article is devoted to one relatively small issue of the dynamics hydraulic structures, determination horizontal hydrodynamic loads on energy absorbers a high-pressure catchment area in cavitating flow presence erosion-free absorbers. In connection with intensive construction high and medium-pressure hydroelectric systems, spillways that operate at rates, very urgent task develop reliable e...