The flame front structures of the methane/air premixed flames are observed by using OH- PLIF method in the different conditions of equivalence ratio and inlet turbulence intensity.

by use of live trace test to movement distance of front conducted by 20 researchers divided in groups in 2001 super league of women football, in addition with vedio analysis system, the data of moving of fronts were collected and analyzed in this paper, the arising problems and counter-measures were pointed out.