Figure 8. Temperature dependencies of delay times of thermal ignition of 40% of H2 - air mixture in the presence and in the absence of a gas stream at P0 = 1 atm. Black triangles - the ignition initiated with platinum foil, motionless gas, R= 0.987; black squares - the ignition initiated with platinum foil, circulating gas, R= 0.989; empty squares - the ignition initiated with a platinum wire, motionless gas, R = 0.981

From

Identification of the Features of the Unstable Flame Propagation by 4D Optical Spectroscopy and Color Speed Cinematography

N Rubtsov, A Kalinin, A Vinogradov, A Rodionov, K Troshin, G Tsvetkov, V Chernysh

Journal of Materials Physics and Chemistry. 2017, 5(1), 11-19 doi:10.12691/jmpc-5-1-2