{HEAD ~ A method} to manipulate {TAIL ~ boundary layer conditions} within a ducted fluid flow is provided 
to manipulate
{ HEAD ~ A method } to manipulate { TAIL ~ boundary layer conditions } within a ducted fluid flow is provided
HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH