A112 A Study on Burning Velocity Characteristics of Methane-Premixed Micro-scale Spherical Laminar Flames

Abstract

This study is pcr 「 brnied to examine experjmelllal the burning veloeity characteristics of the methane − premixcd micro − scale spherical lamina じ fiames with the flamc radius ， 7 ＜ approximatcly 5mln， and also macro − scale laminar flames with ウ ＞ 5mln fbr comparison ． Thc mTxtures havc ncarly thc same laminar burnlng velocity and d " 行 ferent cquivalenco ratio φ( 0， 8 -1， 0) ． Thc radius and tlle buming veloclty of micro − scate flames are obtained by using sequential schlieren images recorded under aPpropriate ignltion conditions ． Tlle rcsu 且 ts show that the burning velocity of methane − premixed micro −scalc tlamcs has tcndcncy to increase with incrcasing f andapProach tllat oflnacro − sca1 し flames． Key 隣 丿 厂4y ：Micro −scalc 1 」 lame ， Methan ¢ Bunling Velocity ， Flame Size， Flame Stretoh