抄録
The influence of pressure on spherically propagating premixed turbulent flames was examined with experiments carried out using a constant volume fan-stirred combustion vessel. The effects of mixture strength and turbulence intensity on the propagation and quench of turbulent flames were studied for methane-air mixtures at the equivalence ratios from 0.6 to 1.5 and the initial pressures from 0.10 to 0.50MPa. Turbulence intensity, u' was set to 0.80 and 1.59m/s. Two mechanisms of quench were observed and are discussed for lean and rich flames. Possible correlations of turbulent burning velocity were developed in terms of Markstein Number and turbulence Reynolds numbers.
