Welcome

Thank you for your interest. Listed below are the main facts about the vortex tube effect:

Facts:

• Air is injected sideways in a tube; it gets very cold in the center and hot at periphery

(block-schematic)

• This temperature separation is fully explained by the turbine equation of Euler.
• This temperature separation can be achieved in a straight moving duct without any air rotation.
• The vortex tube effect is a propulsion phenomenon.
• This vortex effect can be achieved without any “tube”. That is, it can exist as a standalone vortex without surrounding walls.
• A “vortex tube” can be of any size.
• A “vortex tube” can have only cold outlet and no hot outlet. Then it will output cold air and rotational work.
• The traditional vortex tube shown above is a rotorless turboexpander.

Vortex tubes are used for on-demand cooling of air. The images below show a typical commercially sold vortex tube.

The information contained in this site is based on the following research articles written by Jeliazko G Polihronov and collaborators:

• “Thermodynamics of Angular Propulsion”
• Physical Review Letters 109, 054504, 2012.
• “Vortex Tube Effect Without Walls”
• Canadian Journal of Physics, doi:10.1139/cjp-2014-0227 (2015).
• “Angular Propulsion - The Rotational Analog of Rocket Motion”
• Canadian Journal of Physics, doi:10.1139/cjp-2014-0297 (2014).
• “On the Thermodynamics of Angular Propulsion",
• Proceedings of the 10th International Conference on HEFAT, 14-16 July 2014, Orlando (2014).

Questions about this site? Email Jeliazko G. Polihronov at: