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Vortex biography, Vortex discography
No photos, news stories, graphics, or VWvortex logos may be used or reproduced without written permission.Volkswagen is a registered trademark of Volkswagen AG.VWvortex is an independent media publication and is not affiliated with or endorsed by Volkswagen AG or Volkswagen of America, Inc.Revo Releases Performance Software for the Audi R8 4.For other uses, see Vortex (disambiguation).Any spiral motion with closed streamlines is vortex flow.The motion of the fluid swirling rapidly around a center is called a vortex.Properties
2 Dynamics
3 Two types of vortex
3.Vortices in magnets
5 Observations
5.Properties
Vortices display some special properties:
The fluid pressure in a vortex is lowest in the center where the speed is greatest, and rises progressively with distance from the center.The core of a vortex in air is sometimes visible because of a plume of water vapour caused by condensation in the low pressure of the core.The spout of a tornado is a classic and frightening example of the visible core of a vortex.The core of every vortex can be considered to contain a vortex line, and every particle in the vortex can be considered to be circulating around the vortex line.Vortex lines start and end at the boundary of the fluid, but they do not start or end in the fluid.One end of the vortex line is attached to the propeller disk or jet engine, but when the airplane is taxiing the other end of the vortex line readily attaches itself to the ground rather than end in midair.The vortex can suck water and small stones into the core and then into the propeller disk or jet engine.Two or more vortices that are approximately parallel and circulating in the same direction will quickly merge to form a single vortex.The circulation of the merged vortex will equal the sum of the circulations of the constituent vortices.For example, a sheet of small vortices flows from the trailing edge of the wing or propeller of an airplane when the wing is developing lift or the propeller is developing thrust.In less than one wing chord downstream of the trailing edge of the wing these small vortices merge to form a single vortex.The result is a region of downwash behind the wing, between the pair of wingtip vortices.These two wingtip vortices do not merge because they are circulating in opposite directions.Vortices contain a lot of energy in the circular motion of the fluid.In an ideal fluid this energy can never be dissipated and the vortex would persist forever.However, real fluids exhibit viscosity and this dissipates energy very slowly from the core of the vortex.It is only through dissipation of a vortex due to viscosity that a vortex line can end in the fluid, rather than at the boundary of the fluid.This is a hazard to other aircraft and is known as wake turbulence.Dynamics
A vortex can be any circular or rotary flow that possesses vorticity.In fluid dynamics, vorticity is the circulation per unit area at a point in the flow field.Two types of vortex
In fluid mechanics, a distinction is often made between two limiting vortex cases.One is called the free (irrotational) vortex, and the other is the forced (rotational) vortex.The speed along the circular path of flow is held constant or decreases as you move out from the center.Imagine a leaf floating in a free vortex.Forced (rotational) vortex
In a forced vortex the fluid essentially rotates as a solid body (there is no shear).Vortices in magnets
In magnets also exist different classes vortex waves.They are an exact solutions of classical nonlinear magnetic equations e.Lifshitz equation, continuum Heisenberg model, Ishimori equation, Myrzakulov equations, nonlinear Schrodinger equation and so on.Observations
A vortex can be seen in the spiraling motion of air or liquid around a center of rotation.Circular current of water of conflicting tides form vortex shapes.In atmospheric physics, a mesovortex is on the scale of a few miles (smaller than a hurricane but larger than a tornado).On a much smaller scale, a vortex is usually formed as water goes down a drain, as in a sink or a toilet.This whirlpool is caused by water flowing out of a small opening in the bottom of a basin or reservoir.This swirling flow structure within a region of fluid flow opens downward from the water surface.Instances
In the hydrodynamic interpretation of the behaviour of electromagnetic fields, the acceleration of electric fluid in a particular direction creates a positive vortex of magnetic fluid.This in turn creates around itself a corresponding negative vortex of electric fluid.Earth's galaxy, the Milky Way is of this type.References and further reading
"Weather Glossary"' The Weather Channel Interactive, Inc.."An analysis of confined magnetohydrodynamic vortex flows".Washington, National Aeronautics and Space Administration; for sale by the Clearinghouse for Federal Scientific and Technical Information, Springfield, Va.External links
Dust Devil Movie A short movie showing many spinning vortices of varying sizes
Video of two water vortex rings colliding (MPEG)
BubbleRings.Web site on "bubble rings", which are underwater rings made of air formed from vortices.This page was last modified on 25 March 2008, at 15:11.Use the menu to the left to discover more.On October 31, 2003 The Oregon Vortex was on the NBC Nightly News with Tom Brokaw.The Oregon Vortex will be on Inside Edition, time and date not known.On September 19, 2003 an article about The Oregon Vortex was run in The New York Times and The Oregonian.As of May 23, 2003 The Oregon Vortex was featured on Travelocity.The Oregon Vortex was chosen among more than 40,000 member entries as one of the only 10 places in Oregon to be named one of Travelocity's Local Secrets, Big Finds.The Oregon Vortex was selected by Travelocity.The Oregon Vortex as one of the Top 20 Editor's Picks out of the 510 total sites selected for their Local Secrets, Big Finds."These places serve as a reminder of the great diversity and extraodinarily unique nature of America that is worth seeking out."Vortex
Whirling water creates a tornado in a bottle.CAUTION: Do not screw the connector on too
tightly!Or tape the bottles together with the washer
between them.With the filled bottle on top, rapidly rotate the bottles
in a circle a few times.Place the assembly on a table.Notice the shape of the vortex.Also, notice the flow of
the water as it empties into the lower bottle.If you spin the bottles around a few times, the water in
the upper bottle starts rotating.As the water drains into
the lower bottle, a vortex forms.If we ignore the small friction forces, the angular
momentum of the water stays the same as it moves inward.To make water move in a circle, forces called
centripetal forces must act on the water.The hole in the vortex allows air from the lower bottle
to flow easily into the upper bottle.This enables the upper
bottle to drain smoothly and completely.The essence of a vortex is that objects are drawn
together toward the center, then miss!Spiral waves form in the water surface of the vortex.These waves appear to move in slow motion as they travel
upward through the downward flowing water.The Exploratorium's Vortex exhibit was created by artist
Douglas Hollis.You may give each page an identifying name, server, and channel on
the next lines.The objective seems simple enough: Bounce the ball off the bricks and destroy them.Clear the screen and move to the next level.Those of you who have been playing video games since the late 1970s are familiar with the concept, which began with Breakout.Vortex tracks your historical scores, number of levels cleared, number of bricks destroyed, and number of bonuses received.For each category, you can view your best total, an average of your totals, and the number you achieved in your last game.Read on for our tips and tricks, as well as a few cheat codes.Bouncing the ball off one end of the bat will angle it in that direction.Try to place the ball between rows of bricks, so it can bounce around for a while and destroy them.Just be ready for it to return through an empty space.Help section of the main menu.You say you want to cheat?After the game ends, or if you abandon it, you must enter the cheat again if you want to use it.FORSIX: Start the game with 24 lives.When you activate the guns, power ball, or laser cheats, they stay in effect even if you lose a life, but they can be overridden by certain bonuses.Pod games available from Apple?The iTunes Store is here to help.The guns cheat in action.Check which iPod model you have.Do you have comments regarding this game article?If you CAN see this, you are in a bad way.
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