The phrase "a bulk air" is not correct in standard written English.
It is typically used in contexts related to air transport or air quality, but the article "a" is not appropriate before "bulk air."
Example: "The shipment required a bulk air transport to ensure timely delivery."
Alternatives: "large volume of air" or "bulk quantity of air."
In particular it discusses a technique and methodology to determine the bulk air content in an on-line process plant.
The liquid film separating the bubble from bulk air can have a long lifetime (if it is viscous) even if it is not protected by a surfactant.
The second stage consists of locally cooling the occupant's microclimate using a personalized evaporative cooler (PEC) that will allow for higher room bulk air temperatures.
Honey bee antennae are thought to be deflected by the bulk air movement in the acoustic near-field of a sound source [23].
Swing panel was used to vary the direction of bulk air flow.
The bubbles are found to be small and coalesce relatively fast at the bulk air interface.
The Spans reduced the foam stability as the bubbles coalesced rapidly with bulk air.
The agitator and syn-jet arrays are separately driven by three piezoelectric stacks operating at their individual resonant frequencies to actively disrupt and mix the bulk air flow within the channel.
The mass flux between the surface of the material and air depends on the mass transfer coefficient (hm) through the boundary layer, the gas phase concentration of the target compound immediately adjacent to the material (y0), and the gas-phase concentration in bulk air (y(t)).
This is accomplished through the use of localized suction orifices placed near and around the source passengers which are designed to unobtrusively ingest the individual's thermal plume and exhaust it from the aircraft cabin before contaminants entrained in the plume can mix with the bulk air supply.
