The apparatus is provided with {HEAD ~ an interrupter structure} for disrupting the fluid boundary layers at the walls of the apparatus and promoting {TAIL ~ mixing} of the separated boundary layers with the adjacent core layers 
for promoting
The apparatus is provided with { HEAD ~ an interrupter structure } for disrupting the fluid boundary layers at the walls of the apparatus and promoting { TAIL ~ mixing } of the separated boundary layers with the adjacent core layers
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH