This method may be used to attach fluid flow to {HEAD ~ ducted surfaces} bounding {TAIL ~ the fluid flow} 
bounding
This method may be used to attach fluid flow to { HEAD ~ ducted surfaces } bounding { TAIL ~ the fluid flow }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL