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WHAT DOES VORTEX RING MEAN IN ENGLISH?
A vortex ring, also called a toroidal vortex, is a torus shaped vortex in a fluid; that is, a region where the fluid mostly spins around an imaginary axis line that forms a closed loop. The dominant flow in a vortex ring is said to be toroidal, more precisely poloidal. Vortex rings are plentiful in turbulent flows of liquids and gases, but are rarely noticed unless the motion of the fluid is revealed by suspended particles—as in the smoke rings which are often produced intentionally or accidentally by smokers. Fiery vortex rings are also a commonly produced trick by fire eaters. Visible vortex rings can also be formed by the firing of certain artillery, in mushroom clouds, and in microbursts. A vortex ring usually tends to move in a direction that is perpendicular to the plane of the ring and such that the inner edge of the ring moves faster forward than the outer edge. Within a stationary body of fluid, a vortex ring can travel for relatively long distance, carrying the spinning fluid with it.
Definition of vortex ring in the English dictionary
The definition of vortex ring in the dictionary is a stable perturbation in a fluid that takes the form of a torus in which the flow rotates in the section of the torus so that the pressure difference between the inside and outside of the torus balances body forces. The best-known vortex ring is a smoke ring.
The translations of vortex ring from English to other languages presented in this section have been obtained through automatic statistical translation; where the essential translation unit is the word «vortex ring» in English.
List of principal searches undertaken by users to access our English online dictionary and most widely used expressions with the word «vortex ring».
FREQUENCY OF USE OF THE TERM «VORTEX RING» OVER TIME
The graph expresses the annual evolution of the frequency of use of the word «vortex ring» during the past 500 years. Its implementation is based on analysing how often the term «vortex ring» appears in digitalised printed sources in English between the year 1500 and the present day.
Examples of use in the English literature, quotes and news about vortex ring
10 ENGLISH BOOKS RELATING TO «VORTEX RING»
Discover the use of vortex ring in the following bibliographical selection. Books relating to vortex ring and brief extracts from same to provide context of its use in English literature.
This book presents a comprehensive coverage of the wide field of vortex rings.
D. G. Akhmetov, 2009
Vorticity and Vortex Dynamics
The simplest vortex loop is a circular vortex ring, which in a sense is a more
fundamental vortex structure than columnar vortices and can be easily produced
experimentally (e.g., by an impulsive motion of a piston), see Fig.4.22. Because
Jie-Zhi Wu, Hui-yang Ma, M.-D. Zhou, 2007
Vortex Methods and Vortex Motion
Figure 4.16 shows vortex ring formation behind a delta wing in reverse, pitching
from 0° to 60° around the c/2 axis . The vortex loop of the trailing edge vortex
necks down and in column 2, due to viscous-turbulent annihilation reconnection
Karl E. Gustafson, James A. Sethian, 1991
Fluid Vortices: Fluid Mechanics and Its Applications
However, in a viscous flow, the presence of the no-slip condition together with the
induced velocity field of the ring will cause new vorticity to be generated along
the boundary. This vorticity, which is of opposite sense to that of the vortex ring, ...
Sheldon I. Green, 1995
VORTEXRING INTERACTION WITH A FREE SURFACE.
generated by the contaminant gradient. The distribution of the contaminant during the interaction depends on the strength of the contamination. Results are also compared to a collision with a no-slip surface.
MUSEOK SONG, 1991
IUTAM Symposium on Hamiltonian Dynamics, Vortex Structures, ...
Motion of an elliptic vortex ring is considered as an example of unsteady 3D
vortex motion. The Local Induction Equation is used for the analysis. By keeping
the self-induction constant and changing its value in the equation, different
Alexey V. Borisov, Valery V. Kozlov, Ivan S. Mamaev, 2007
13.12 Unsteady Lifting-Surface Solution by Vortex Ring Elements The method of
transforming steady-state flow based numerical solutions into the time-dependent
mode is described schematically in Fig. 13.25 and in the introduction to Section ...
Joseph Katz, Allen Plotkin, 2001
Taylor [1953[ examined the properties of the uniform vortex ring formed by coarse
-graining the rolled up sheet into a circular vortex ring of radius R, core radius c,
and circulation P. The hydrodynamic impulse of the ring is F7r/?2. Assuming that
P. G. Saffman, 1995
Prevention of Hazardous Fires and Explosions: The Transfer ...
The Mechanism of the Diffusion Plume Extinguishing by the Vortex Ring The
plume extinguishing is accomplished when the vortex ring filled with dusted fire-
extinguishing powder moves along the spout axis to the top of the plume. The
V.E. Zarko, 1999
Sedimentation and Sediment Transport
V_y(l/ (c) 30cm Figure 1: (a) Experimental setup, (b)-(d) schematic showing the
important stages of a vortex ring colliding with a solid boundary. source. Images
were captured from two different camera perspectives, the first looking down at
A. Gyr, Wolfgang Kinzelbach, 2003
10 NEWS ITEMS WHICH INCLUDE THE TERM «VORTEX RING»
Find out what the national and international press are talking about and how the term vortex ring is used in the context of the following news items.
V-22 Highs and Lows
Like helicopters, the V-22 is susceptible to vortex ring state, a condition in descent in which vortices normally shed clear of the rotor blades become trapped ... «Aviation Today, May 15»
Military aviation expert believes engine failure or pilot error caused …
He also tells me by phone, that the Osprey engine is usually reliable so he is leaning toward pilot error. Vortex Ring State is when the rotor suddenly loses lift, ... «Hawaii News Now, May 15»
Is this a UFO? Eerie video shows bizarre black ring hovering over …
One viewer wrote: "A vortex ring or smoke ring can be formed in the atmosphere by a rising (falling) mass of warm (cold) air, which is also called a thermal ... «mirror.co.uk, Apr 15»
Soliton discovery was a false alarm
Some concluded that the region of lower density in the fluid was the result not of a soliton but of a vortex ring—a swirling, donut-shaped structure, around which ... «Futurity: Research News, Sep 14»
Local congressman fights for truth about Osprey crash in 2000
However, after multiple investigations, inspectors say they know what caused that plane to crash -- something called vortex ring state. It's a flying condition that, ... «WTVD-TV, May 14»
Hunt for an 'unidentified electron object'
This image shows vortex rings as the result of vortex multiplication in a quantum fluid. Some electrons are free, some got trapped by one or more vortices. Credit: ... «Phys.Org, Mar 14»
Solving a physics mystery: Those 'solitons' are really vortex rings
An example of a vortex ring, also called a toroidal bubble, which dolphins create under water. The concept of vortex rings lies at the heart of new University of ... «UW Today, Feb 14»
Vortex ring state suggested in North Sea helicopter crash
The Aug. 23 crash of a Eurocopter AS332 L2 Super Puma in the North Sea may have occurred when the helicopter entered vortex ring state in the final stages of ... «Vertical Magazine, Oct 13»
Jellyfish Even More Efficient Propulsors than Previously Believed …
Once believed to be a moment of pause for the jellyfish, the researchers found a second vortex ring that comes up the underside of the animal and gives its a ... «Nature World News, Oct 13»
New study reveals why jellyfish are such efficient swimmers (w/ Video)
Notice how the stopping vortex forms upstream and on the exumbrellar surface of the animal before recovery. The vortex ring then moves under the bell as … «Phys.Org, Oct 13»
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