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