each element thereby providing a number of {HEAD ~ adjacent pointwise boundary layer interruptions} corresponding to {TAIL ~ the number} of blade like members thereof, 
corresponding to
each element thereby providing a number of { HEAD ~ adjacent pointwise boundary layer interruptions } corresponding to { TAIL ~ the number } of blade like members thereof ,
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH