Abstract
Experimental study of turbulent premixed flames for CO/H_2/CO_2/air mixture as a model of coal gasification syngas in a high pressure environment was performed up to 1.0 MPa. Flame structure and turbulent burning velocity were analyzed using OH-PLIF images. Results showed that very fine cusps were seen for CO/H_2/CO_2/air flames, these small cusps being generated on a large scale wrinkled flame front even for low u'/SL. Flame surface density of CO/H_2/CO_2/air flames was higher than that of CH_4/air flames, while the mean volume of the turbulent flame region was smaller.
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