E232 Experimental Study of Local Flame Displacement Velocity for Hydrogen added Propane Premixed Turbulent Flames

Abstract

The influence of the addition of hydrogen to propane mixtures on its local burning velocity is investigated directly. Hydrogen added propane mixtures having nearly the same laminar burning velocity with different rates of addition of hydrogen and equivalence ratios are prepared. A two-dimensional sequential laser tomography technique is used to obtain the temporal statistical relationship between the flame shape and the flame displacement. The local flame displacement velocity S_F is quantitatively obtained as the key parameters of the turbulent combustion. The obtained S_F is also discussed by the concept of Markstein number.