This experimental study reveals a spectacular and important phenomenon—double vortex
breakdown—in a swirling flow of two immiscible fluids where vortex breakdown bubbles …

This experimental study reveals a counterflow slip at the interface of two immiscible fluids
filling a sealed vertical cylindrical container whose bottom disk rotates while other walls are …

This paper reviews counterflows, double counterflows, and circulation cells in vortex motion
and argues that all these seemingly paradoxical phenomena can be caused by a common …

Understanding internal vortex breakdowns (VBs) and their trajectories in sealed cylinders
are important for the scientific and industrial applications with which they are linked …

This experimental and numerical study discusses the formation of double vortex breakdown
in a swirling flow of two immiscible fluids where new circulation cells evolve in both fluids …

In this paper, the Vogel–Escudier flow is studied at an aspect ratio of 2.5 and a Reynolds
number range of 330–3000. An attempt is made to control the vortex breakdown bubbles …

The current work studies a swirling laminar viscous pipe flow with a controllable swirl
induced by an axial blade swirler. Different vortex breakdown patterns are created by a …

Current work deals with the study of swirling laminar flows in confined and unconfined flows
in order to identify common patterns considering the phenomenon of vortex breakdown. Two …

ABSTRACT A large-scale double-precessing vortex in two-phase flow in a tangential
hydrodynamic vortex reactor has been studied. It has been found that air injection into the …

This paper describes the first experimental evidence of how vortex breakdown develops and
disappears in both upper and lower fluids in a sealed vertical cylindrical container, where …