In addition, by including {HEAD ~ a protrusion} in the first row of pedestals, turbulence is induced immediately to the flow of {TAIL ~ gas} entering the cavity 
In addition , by including { HEAD ~ a protrusion } in the first row of pedestals , turbulence is induced immediately to the flow of { TAIL ~ gas } entering the cavity
OTH OTH OTH OTH OTH 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 OTH OTH OTH