Propagation and Quench of Premixed Turbulent Flames

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 mixture pressures of 0.10 to 0.50 MPa. 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 Lewis and turbulence Reynolds numbers.