ABSTRACT In a gap between two concentric cylinders, we discover that the small heavy particle settling velocity (Vs) is greater than its associated terminal (Vt) in featureless turbulence generated by counter-rotating inner and outer cylinders simultaneously. The peak enhancement of Vs occurs at St × (Vt/u′) ∼ 1, where u′ are, respectively, r.m.s. fluctuation Stokes number defined as ratio resp...

The purpose of this article was to present the solution for critical Taylor number in case motion between rotating coaxial cylinders based on theory stochastic equations continuum laws and equivalence measures random deterministic motions. Analytical solutions are currently special value, as obtained by modern numerical methods require verification. At present, scientific literature, there no m...