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  2. Vortex tube - Wikipedia

    en.wikipedia.org/wiki/Vortex_tube

    The vortex tube, also known as the Ranque-Hilsch vortex tube, is a mechanical device that separates a compressed gas into hot and cold streams. The gas emerging from the hot end can reach temperatures of 200 °C (390 °F), and the gas emerging from the cold end can reach −50 °C (−60 °F). [ 1 ]

  3. Georges J. Ranque - Wikipedia

    en.wikipedia.org/wiki/Georges_J._Ranque

    Georges-Joseph Ranque (7 February 1898 – 15 January 1973) was the inventor of the Ranque-Hilsch vortex tube, which generates streams of hot and cold gas from a stream of compressed gas. Georges-Joseph Ranque was born in Ambérieu-en-Bugey, France in 1898. [1]

  4. Vortex - Wikipedia

    en.wikipedia.org/wiki/Vortex

    In general, vortex lines (in particular, the axis line) are either closed loops or end at the boundary of the fluid. A whirlpool is an example of the latter, namely a vortex in a body of water whose axis ends at the free surface. A vortex tube whose vortex lines are all closed will be a closed torus-like surface. A newly created vortex will ...

  5. Helikon vortex separation process - Wikipedia

    en.wikipedia.org/wiki/Helikon_vortex_separation...

    The tube tapers to a small exit aperture at one or both ends. This tangential injection of gas results in a spiral or vortex motion within the tube, and two gas streams are withdrawn at opposite ends of the vortex tube; centrifugal force providing the isotopic separation. The spiral swirling flow decays downstream of the feed inlet due to ...

  6. Vorticity - Wikipedia

    en.wikipedia.org/wiki/Vorticity

    A vortex tube is the surface in the continuum formed by all vortex lines passing through a given (reducible) closed curve in the continuum. The 'strength' of a vortex tube (also called vortex flux) [10] is the integral of the vorticity across a cross-section of the tube, and is the same everywhere along the tube (because vorticity has zero ...

  7. Compressed air - Wikipedia

    en.wikipedia.org/wiki/Compressed_air

    Pneumatic post, using capsules to move paper and small goods through tubes. Air tools; HVAC control systems; spray painting; Vehicle propulsion (see compressed-air vehicle) Energy storage (see compressed-air energy storage) Recreation – Amusement Parks, Golf Courses (Sprinkler Systems), Hotel elevators, Ski Resorts (Snow making) Air brakes ...

  8. Vortex shedding - Wikipedia

    en.wikipedia.org/wiki/Vortex_shedding

    Vortex shedding as winds pass Heard Island (bottom left) in the southern Indian Ocean resulted in this Kármán vortex street in the clouds In fluid dynamics , vortex shedding is an oscillating flow that takes place when a fluid such as air or water flows past a bluff (as opposed to streamlined) body at certain velocities, depending on the size ...

  9. Helmholtz's theorems - Wikipedia

    en.wikipedia.org/wiki/Helmholtz's_theorems

    More simply, vortex lines move with the fluid. Also vortex lines and tubes must appear as a closed loop, extend to infinity or start/end at solid boundaries. Fluid elements initially free of vorticity remain free of vorticity. Helmholtz's theorems have application in understanding: Generation of lift on an airfoil; Starting vortex; Horseshoe vortex

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