In 2014, berries, packaged salad and deli prepared chicken had the largest dollar and volume velocity
growth (dollars sold per $1 million in all commodity volume, or ACV, distribution) year over year.
The volume velocity
and variety of data agencies need to deal with is increasing rapidly as a result, effectively creating a vast big data problem for agencies to deal with.
It is defined as the ratio of the volume flow oscillations ([??]) to the volume velocity of the mixture flow ([[??].sub.i]) or
Fluctuations to the volume velocity of the flame, which are external to the feedback loop, are indicated by [[??].sub.ext].
The flame can be assumed to be a volume velocity source having volumetric source strength (Q).
[Z.sub.u] and [Z.sub.d] are the upstream and downstream acoustic impedance (ratio of sound pressure to volume velocity) respectively.
This results in a fluctuating heat release or volume velocity, which is an acoustic disturbance in the combustion chamber.
Heat release oscillations result in a fluctuating volume velocity (i.e.
Perturbations to the volume velocity of the flame, which are external to the feedback loop, are indicated by [[??].sub.ext].
For mathematical ease, the acoustic impedance is expressed as the ratio of the sound pressure to the volume velocity (i.e., the particle velocity multiplied by cross-sectional area).
The flame is assumed to be a volume velocity source (units of [ft.sup.3]/s or [m.sup.3]/s) having strength Q.
The acoustic impedance is the ratio of sound pressure to the volume velocity at a given position.