Design the uniform air flow distribution
1.Design principle
Air flow will flow out if the holes existed in the duct due to the
static pressure difference between inside wall and outside wall of
the holes. Therefore, the direction of air velocity of outflow (vs) is
vertical to the duct wall, as shown in Fig. 1. However, the velocity
(vd) in duct also influence the real velocity (vr) direction of air flows
out of the side holes.
2.Realization the uniform air flow distribution
For duct section numbered i and i + 1, as shown in Fig. 2,
the equation for flow conservation