The experimental and numerical results reveal that the transverse flow of air stream through the punched holes disturbs the air flow in the lower channel, enhancing the heat transfer on the under surface of fin.
Traditionally, the performance of biofilters has been modeled/predicted using process-based models that are based on mass balance principles, simple reaction kinetics, and a plug flow of air stream [ 15– 15].
By contrast, in 2010 and 2011, a persistent dip in the jet stream brought a stronger southwesterly flow of air at upper levels of the atmosphere along the East Coast, which helped turn many storms out to sea before reaching landfall.
"The world rotates from west to east, however, and that rotation whips up this northward flow of air that descends over higher latitudes and sends it flying east round the globe as the jet stream.
"This flow of air, high up in the atmosphere, from the tropics to the Arctic, is the crucial ingredient in the creation of the jet stream.
The single wooden spheres were oven-dried and exposed to various temperatures and streams of air with different flow rates.
This rapidly flowing stream of high-altitude air separates the cold dry arctic air from warmer moist air closer to the equator.
As the autogiro is propelled forward through the air, with a stream of air flowing upward through its rotor, lift is generated.
One thereby infers that the components of a propulsor must exert a force F on the stream of air flowing through the propulsor if this device accelerates the airstream from the flight velocity V0 to the discharge velocity Vj.
The stress was revealed by the deflection of a nanofiber, caused by the drag force from a broad stream of air, which flowed perpendicular to the fiber at a known velocity.
