The phrase "air swirl" is correct and usable in written English.
It can be used to describe a movement of air that creates a swirling effect, often in contexts related to weather, fluid dynamics, or even in artistic descriptions.
Example: "The air swirl created by the fan made the room feel much cooler on a hot summer day."
Alternatives: "air vortex" or "air eddy".
Cold wet masses of air swirl down from it & settle in hollows.
This double inlet made the clean air swirl in the region near the vortex finder, and the particle-laden air swirl in the region close to cyclone wall.
Best results are apparently obtained when the air swirl bears a definite relation to the fuel-injection rate.
Stable flame operation was noticed even without secondary and tertiary air swirl.
Using the numerical simulation developed here, a variation of thermal and prompt NO formation was predicted by changing the excess air ratio and tertiary air swirl number.
This paper reviews the effects of different engine variables such as compression ratio, load and speed, fuel injection parameters, air swirl, piston design on the performance of engine.
These severe thunderstorms produced thousands of cloud to ground lightning strikes, some of which shot more than a dozen miles into the clear air swirling into the system.
The effect of engine speed and load as well as of the air swirling motion on the heat transfer variations are presented.
We examine the influences of various parameters such as the relative position of the over-fire air (OFA) nozzle, over-fire air ratio (19.1%), primary air ratio, inner secondary air ratio, outer secondary air ratio, inner secondary air swirling intensity, and outer secondary air swirling intensity on NOx formation and unburned carbon in fly ash.
Over the next 20 minutes, the depressurized cabin air swirled with wind and debris, panic and prayers as the pilot rerouted the plane to Philadelphia for an emergency landing.
On Earth, life exists in water and on land but, on a giant gas planet, for example, it might exist high in the atmosphere, trapping nutrients from the air swirling around it.
