In certain example embodiments, {HEAD ~ the velocity} of the air/wind may be increased within {TAIL ~ the channel} by virtue of features that produce the Coanda effect 
In certain example embodiments , { HEAD ~ the velocity } of the air / wind may be increased within { TAIL ~ the channel } by virtue of features that produce the Coanda effect
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH