The different variants of the Navier -Stokes equations are presented in the paper. The authors also present new variants to be used for qualitative analysis of the fluid [...]

Swirling flows are very susceptible to instabilities. Very often they are present in draft tubes of hydraulic turbines as so called vortex ropes resulting from spiral vor [...]

Many industrial devices positively utilize the action of centrifugal forces induced by highly swirling flows (e.g. hydrocyclones, swirl burners). On the other hand swirli [...]

This contribution deals with computational modelling of a static analysis of the long and short journal bearings. In this contribution is presented a new theoretical appr [...]

One of the possibility, how to reduce amplitude of transversal vibration of rotors is to put together their rotating and no-rotating part by the squeeze film damper. This [...]

Motion of cavitating vortex rope with influence of its rotation has been studied. The solution is performed in Lagrange coordinates. The nonlinear mathematical model take [...]

It is generally known, that liquids, including water, are electrically conducting. The electric conductivity magnitude among others depends on the minerals concentration. [...]

At the pumps of low specific speed it is possible, that near the point of Y zero discharge the Q-Y characteristic is unstable ( 0 ). This phenomenon of Q unstable Q-Y cha [...]

Analytical derivation of the sound speed is presented in this report. The derivation is shown on the example of water – air mixture, but the results are applicable for [...]