EFFECT OF SINGLE AND MULTIPLE BUBBLES ON A THIN VORTEX RING

2020 ◽  
Vol 27 (1) ◽  
pp. 1-27
Author(s):  
Subhajit Biswas ◽  
Raghuraman N. Govardhan
Keyword(s):  
Vortex Ring ◽  
Multiple Bubbles

NONSTATIONARY FLOW OVER THE LIFTING ROTOR FOR REGIMES OF STEEP GLIDING AND VORTEX RING

2012 ◽  
Vol 43 (3) ◽  
pp. 331-353
Author(s):  
Valentina Michailovna Scheglova
Keyword(s):  
Vortex Ring ◽  
Nonstationary Flow

Two interacting vortex ring pairs and their sound generation

AIAA Journal ◽  
2000 ◽  
Vol 38 ◽  
pp. 79-86 ◽  
Author(s):  
N. W. M. Ko ◽  
R. C. K. Leung ◽  
K. Lam
Keyword(s):  
Vortex Ring ◽  
Sound Generation

Vortex Ring Generator

1998 ◽  
Author(s):  
George Lucey ◽  
Louis Jasper
Keyword(s):  
Vortex Ring

Motion of a Large Dusty Buoyant Thermal With a Vortex Ring

1978 ◽  
Vol 45 (4) ◽  
pp. 711-716 ◽  
Author(s):  
Stephen S.-H. Chang
Keyword(s):  
Numerical Solution ◽  
Vortex Ring ◽  
Excellent Agreement ◽  
Spherical Particles ◽  
System Of Equations ◽  
Inhomogeneous Atmosphere

This paper presents a method for computing the motion and decay of a large dusty, buoyant thermal (cloud) carried by a vortex ring generated from a strong near ground explosion and ascending in an inhomogeneous atmosphere. A system of equations is derived describing the motion of the vortex ring, the thermal, and the pollutants which consist of numerous solid spherical particles. The interior properties and the trajectories of the thermal and the pollutants are obtained. The numerical solution for the thermal trajectory is in excellent agreement with experiment.

scholarly journals The time-development of energy spectrum of a quantized vortex ring

2020 ◽  
Vol 1675 ◽  
pp. 012007
Author(s):  
V A Andryushchenko ◽  
L P Kondaurova
Keyword(s):  
Energy Spectrum ◽  
Vortex Ring ◽  
Time Development ◽  
Quantized Vortex

Hydrodynamic impulse enhancement of a vortex ring interacting with an axisymmetric co-axial aperture

2021 ◽  
Vol 917 ◽  
Author(s):  
JiaCheng Hu ◽  
Sean D. Peterson
Keyword(s):  
Vortex Ring

Abstract

scholarly journals Emergence of small scales in vortex ring collisions

2018 ◽  
Vol 3 (10) ◽  
Author(s):  
Ryan McKeown ◽  
Rodolfo Ostilla-Mónico ◽  
Alain Pumir ◽  
Michael P. Brenner ◽  
Shmuel M. Rubinstein
Keyword(s):  
Vortex Ring ◽  
Small Scales

scholarly journals Numerical Analysis of Air Vortex Interaction with Porous Screen

Fluids ◽  
2021 ◽  
Vol 6 (2) ◽  
pp. 70
Author(s):  
Xudong An ◽  
Lin Jiang ◽  
Fatemeh Hassanipour
Keyword(s):  
Physical Properties ◽  
Vortex Ring ◽  
Numerical Study ◽  
Flow Behavior ◽  
Industrial Applications ◽  
Moving Mesh ◽  
Vortex Flows ◽  
Vortex Interaction ◽  
Piston Cylinder ◽  
Porous Screen

In many industrial applications, a permeable mesh (porous screen) is used to control the unsteady (most commonly vortex) flows. Vortex flows are known to display intriguing behavior while propagating through porous screens. This numerical study aims to investigate the effects of physical properties such as porosity, Reynolds number, inlet flow dimension, and distance to the screen on the flow behavior. The simulation model includes a piston-cylinder vortex ring generator and a permeable mesh constructed by evenly arranged rods. Two methods of user-defined function and moving mesh have been applied to model the vortex ring generation. The results show the formation, evolution, and characteristics of the vortical rings under various conditions. The results for vorticity contours and the kinetic energy dissipation indicate that the physical properties alter the flow behavior in various ways while propagating through the porous screens. The numerical model, cross-validated with the experimental results, provides a better understanding of the fluid–solid interactions of vortex flows and porous screens.

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