Prediction of the Liftoff, Blowout and Blowoff Stability Limits of Pure Hydrogen and Hydrogen-Hydrocarbon Mixture Jet Flames-Paper

The paper presented experimental studies of the liftoff and blowout stability of pure hydrogen,hydrogen/propane and hydrogen/methane jet flames using a 2 mm burner. Carbon dioxide and Argongas were also used in the study for the comparison with hydrocarbon fuel. Comparisons of the stabilityof H2/C3H8, H2/CH4, H2/Ar and H2/CO2 flames showed that H2/C3H8 produced the highest liftoff heightand H2/CH4 required highest liftoff and blowoff velocities. The non-dimensional analysis of liftoffheight approach was used to correlate liftoff data of H2, H2-C3H8, H2-CO2 , C3H8 and H2-Ar jet flamestested in the 2 mm burner. The suitability of extending the empirical correlations based on hydrocarbonflames to both hydrogen and hydrogen/hydrocarbon flames was examined.