The method 13, wherein the change to the localized environment caused by providing the at least one source of pressure differential includes cooling {TAIL ~ combustion product gasses} by at least 25% compared to {HEAD ~ the temperature} of the energy source relative to the temperature of the surface 
The method 13 , wherein the change to the localized environment caused by providing the at least one source of pressure differential includes cooling { TAIL ~ combustion product gasses } by at least 25 % compared to { HEAD ~ the temperature } of the energy source relative to the temperature of the surface
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH