4.7 Article

Formation and evolution of vortex rings with weak to moderate swirl

Related references

Note: Only part of the references are listed.
Article Mechanics

Formation of an orifice-generated vortex ring

Raphael Limbourg et al.

Summary: This study experimentally investigated the formation of orifice-generated vortex rings at a Reynolds number of 5300 and tube-to-orifice diameter ratio of 2.0. It was found that the circulation, impulse, and energy of the rings increase significantly with stroke ratio, and critical parameters and time scales in the formation process were defined. The study also measured non-dimensional vortex ring numbers alpha, beta, and gamma, which were consistent with previous work and suggested universality for all isolated vortex rings.

JOURNAL OF FLUID MECHANICS (2021)

Article Mechanics

A large-eddy simulation study on vortex-ring collisions upon round cylinders

T. H. New et al.

Summary: The study conducted numerical simulations on head-on collisions between vortex-rings and round cylinders, revealing vortical behavior and flow details not previously observed. Results showed that smaller diameter-ratio cylinders can produce elliptic vortex-ringlets with increased aspect ratio and axis-switching behavior. Additionally, tertiary vortex-ring cores were formed and merged within the confines of primary vortex-ring cores, leading to the formation of inner vortex-dipoles.

PHYSICS OF FLUIDS (2021)

Article Thermodynamics

The Formation and Evolution of Turbulent Swirling Vortex Rings Generated by Axial Swirlers

Chuangxin He et al.

FLOW TURBULENCE AND COMBUSTION (2020)

Article Mechanics

Dynamics of compact vortex rings generated by axial swirlers at early stage

Chuangxin He et al.

PHYSICS OF FLUIDS (2020)

Article Mechanics

Numerical stability analysis of a vortex ring with swirl

Yuji Hattori et al.

JOURNAL OF FLUID MECHANICS (2019)

Article Mechanics

Modelling of confined vortex rings

Ionut Danaila et al.

JOURNAL OF FLUID MECHANICS (2015)

Article Mechanics

The evolution of swirling axisymmetric vortex rings

C. Gargan-Shingles et al.

PHYSICS OF FLUIDS (2015)

Review Mechanics

Dynamics of Swirling Flames

Sebastien Candel et al.

ANNUAL REVIEW OF FLUID MECHANICS, VOL 46 (2014)

Article Mechanics

On the evolution of vortex rings with swirl

Takashi Naitoh et al.

PHYSICS OF FLUIDS (2014)

Article Mechanics

On the drag of turbulent vortex rings

L. Gan et al.

JOURNAL OF FLUID MECHANICS (2012)

Article Mechanics

Large eddy simulation of a pulsed jet in cross-flow

Axel Coussement et al.

JOURNAL OF FLUID MECHANICS (2012)

Article Engineering, Mechanical

An experimental study of a turbulent vortex ring: a three-dimensional representation

L. Gan et al.

EXPERIMENTS IN FLUIDS (2011)

Article Mechanics

An experimental study of turbulent vortex rings during their early development

L. Gan et al.

JOURNAL OF FLUID MECHANICS (2010)

Article Mechanics

A model for the pinch-off process of the leading vortex ring in a starting jet

L. Gao et al.

JOURNAL OF FLUID MECHANICS (2010)

Article Mechanics

Vortex ring with swirl: A numerical study

M. Cheng et al.

PHYSICS OF FLUIDS (2010)

Article Mechanics

Starting flow through nozzles with temporally variable exit diameter

JO Dabiri et al.

JOURNAL OF FLUID MECHANICS (2005)

Article Mechanics

An experimental investigation of swirling jets

HZ Liang et al.

JOURNAL OF FLUID MECHANICS (2005)

Article Physics, Multidisciplinary

Ten questions concerning the large-eddy simulation of turbulent flows

SB Pope

NEW JOURNAL OF PHYSICS (2004)

Article Engineering, Multidisciplinary

Vortex ring evolution in an impulsively started jet using digital particle image velocimetry and continuous wavelet analysis

C Schram et al.

MEASUREMENT SCIENCE AND TECHNOLOGY (2001)

Article Mechanics

Effects of trailing jet instability on vortex ring formation

W Zhao et al.

PHYSICS OF FLUIDS (2000)

Article Mechanics

Energy and velocity of a forming vortex ring

M Shusser et al.

PHYSICS OF FLUIDS (2000)