The phrase "air vortex" is correct and usable in written English.
It can be used in contexts related to physics, meteorology, or engineering, particularly when discussing the movement of air in a spiral or circular motion.
Example: "The air vortex created by the spinning blades of the helicopter can affect nearby structures and vegetation."
Alternatives: "air whirlpool" or "air spiral".
The design of an air vortex generator and receiver are described.
The phase spectrum is viewed as the evolutionary result driven by characteristic velocity of air vortex.
Its causes and its relation to common lightning are not known, but among the suggested explanations are: air or gas behaving abnormally, high-density plasma phenomena, an air vortex containing luminous gases, and microwave radiation trapped within a plasma bubble.
Instead, they said, it got caught in an air vortex caused by higher-than-expected temperatures and the high compound walls, which blocked the downwash of the rotor blades.
Airflow streamlines match the profile of the non-radial arc rotor blade perfectly, and no air vortex is present in the channels of the rotor cage.
Air vortex and very high turbulence formed inside the reactor dissipate heat generated during shot peening and thus suppress dynamic recovery which promotes formation of refined and thicker nanocrystalline structure on a metallic surface.
Yet something strange was in the air, the vortex of adolescent change.
Moreover, an air-side vortex extinguished the flame more rapidly than a fuel-side vortex, since the air-side vortex was much stronger than the fuel-side vortex, given the same vortex jet velocity conditions.
Air-entraining vortex at intake is an important problem encountered in hydraulic engineering.
The results illustrate air-core vortex detection, miscible fluid mixing and gas-liquid mixing processes.
Free air-core vortex occurring at a water-intake pipe is an important problem encountered in hydraulic engineering.
