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Water Vortex

There are several ways to demonstrate the motion of a vortex. The most simple method would be the popular vortex in a bottle type. This can be made by sticking two plastic bottles end to end by their lids. With a hole through the adjoining lids water can be made to pass from one bottle to the other, under the influence of gravity. A simple swirl of the bottle is enough to make the water spin and accelerate to form a vortex.

Vortex Cooling

A vortex tube is a method commonly used for cooling. By forcing compressed air into the device vortices will form which allow hot air to exit from one end whilst the cold dense air exits the other end.

Info from Wikipedia
The vortex tube, also known as the Ranque-Hilsch vortex tube, is a heat pump with no moving parts. Pressurized gas is injected into a specially designed chamber. The chamber's internal shape, combined with the pressure, accelerates the gas to a high rate of rotation (over 1,000,000 rpm). The gas is split into two streams, one giving kinetic energy to the other, and resulting in separate flows of hot and cold gases.

The vortex tube was invented in 1930 by French physicist Georges J. Ranque. German physicist Rudolf Hilsch improved the design and published a widely read paper in 1945 on the device, which he called a Wirbelröhre (literally, vortex tube).

Vortex tubes have lower efficiency than traditional air conditioning equipment. They are commonly used for inexpensive spot cooling, when compressed air is available. Commercial models are designed for industrial applications to produce a temperature drop of about 80 °F (45 °C).

Another application is for uranium enrichment. South Africa used vortex tubes in their Helikon vortex separation process.

Dave Williams, of Engineers Without Borders, has proposed using vortex tubes to make ice in third-world countries. Although the technique is inefficient, Williams hopes it could yield helpful results in areas where using electricity to create ice is really not an option.

Plasma Vortex

A plasma vortex can be made through the interaction of electric and magnetic fields. A simple setup in a homemade vacuum chamber allows a plasma column to form within the magnetic field of a pair of rare earth magnets. The plasma column will rotate around the magnets in a direction which depends upon the polarity of the fields.

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Questions and Comments on the Vortex Experiments

Matt	Tuesday, 7th November 2006 11:15pm - No.457
I wish i was a scientist. I had an idea but I dont know if it would work. In the vortex cooling part, it mentions that you get an rpm of over 1,000,000. Could a fan be placed inside connected to a turbine/dynamo to provide electricity? If it could, would it be efficient? If anyone knows anything about this please could you do some experiments.
RMCybernetics	Saturday, 2nd December 2006 2:09am - No.540
It would probably interupt the cooling effects, but it would be possible to generate power this way. It is unlikley though that it would be a particulary efficient way to convert the energy in compressed air into electricity.
John	Friday, 13th April 2007 3:33pm - No.1149
Does it Matter Which Way the Magnets Are Facing?
RMCybernetics	Friday, 13th April 2007 3:41pm - No.1151
The magnets are arranged so that they are attracting eachother with the poles pointing parralel to the electric current. it is the magnetic field produced by the current flowing in the arc which reacts against the field of the magnets.
Tammy	Friday, 11th July 2008 9:34am - No.2897
Does it matter what type of gas you use? Can liquid be used instead of gas? Can anything that has a pressurized flow be split into two streams similar to compressed air? Is there an equivalent way to split electrical pressure into two streams? And what might an electrical vortex tube look like?
RMCybernetics	Friday, 11th July 2008 10:29pm - No.2899
It needs to be a compressible fluid or something which can have density gradient within it. It may be possible with liquid mixtures or solutions where the components of the liquid are of different molecular masses. Magnetic fields could cause vorticies of charged particles if they are moving like shown above.

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