The article discusses the numerical modeling of inverse problem determining kinematic viscosity for vortex-current equation. To solve this differential problem, least squares method is used, and under study reduced to finding minimum functional. formulation direct problems presented. approximated by finite differences solved sweep method. A computational experiment has been carried out illustra...

As was demonstrated in earlier studies, turbulence can result in a negative contribution to the effective mean magnetic pressure, which, in turn, can cause a large-scale instability. In this study, hydromagnetic mean-field modelling is performed for an isothermally stratified layer in the presence of a horizontal magnetic field. The negative effective magnetic pressure instability (NEMPI) is co...

The kinematic viscosity is a major physical property to be used in numerical, experimental and analytical work in all the related fields of fluid flow research. Its determination can be based on experiments with viscometer and on calculations for single or multi-species components, possibly through the use of mixture law and other intermediate parameters. Its experimental estimation for multi-s...

Maintenance of the technical condition hydrostatic transmission agricultural machines is not fully provided by existing repair and maintenance system Ukraine, which determines search for available methods early detection hydraulic drive malfunctions. The purpose study was to synthesise a method predicting modern controlling dynamics changes in values empirical dependence pressure on kinematic v...

Despite its limitations, Prandtl’s mixing length model is widely applied in modelling turbulent free shear flows. extended addresses many of the shortfalls original model, but not so used, part due to additional mathematical complexities that arise derivation and implementation. Furthermore, both models, Prandtl neglects kinematic viscosity on basis it much smaller magnitude than viscosity. Rec...

A nonlinear stability analysis of two superposed semi-infinite viscoelastic electrified fluids streaming through porous media in the presence of vertical electric fields admitting surface charges at their interface is investigated in three dimensions. The method of multiple scales is used to obtain a Ginzburg-Landau equation with complex coefficients describing the behavior of the system. The l...