Vacuum polarization at the tip of a water drop
First rejected by the Nobel prize laureate Wolfgang Pauli as non-sense, the effect of vacuum polarization proves to be commonly observable in everyday life.
hep-th↗
arXiv subjects
Rouslan Krechetnikov
Publications and source records attributed to Rouslan Krechetnikov.
On the moving contact line singularity
Given that contact line between liquid and solid phases can move regardless how negligibly small are the surface roughness, Navier slip, liquid volatility, impurities, deviations from the Newtonian behavior, and other system-dependent parameters, the problem is treated here from the pure hydrodynamical point of view only. In this note, based on straightforward logical considerations, we would like to offer a new idea of how the moving contact line singularity can be resolved and provide support with estimates of the involved physical parameters as well as with an analytical local solution.
physics.flu-dyn↗
A resolution of the transition to turbulence paradox
Understanding the transition to turbulence has been impeded by a modeling oversight
physics.flu-dyn↗
Effects of interfacial curvature on Rayleigh-Taylor instability
In this work a non-trivial effect of the interfacial curvature on the stability of accelerated interfaces, such as liquid rims, is uncovered. The new stability analysis, based on operator and boundary perturbation theories, reveals and quantifies influence of the interfacial curvature on the growth rate and on the wavenumber selection of the Rayleigh-Taylor instability. The systematic approach developed here also provides a rigorous generalization of the widely used \textit{ad hoc} idea, due to Layzer [Astrophys. J. \textbf{122}, 1-12 (1955)], of approximating the potential velocity field near the interface.
physics.flu-dyn↗