Investigation of laminar flame speeds of typical syngas using laser based Bunsen method and kinetic simulation

Effect of H2/CO ratio and N2/CO2 dilution rate on laminar burning velocity of syngas investigated by direct measurement and simulation

“…Another reason may be attributed to the special property of carbon monoxide. Its maximum adiabatic temperature locates at the fuel-rich side with / around 1.25 [5], and it belongs to oxygenated species which can facilitate the maximal adiabatic laminar burning velocity to appear towards the fuel-rich side [30,38].…”

“…The Bunsen flame method is a convenient and widely used approach for laminar burning velocity measurements, especially for the conic-shaped premixed flame with straight sides [5,11,13,30]. When the unburnt mixture velocity U 0 at the burner outlet can be considered to be uniform, the laminar burning velocity S L can be calculated with S L = U 0 sina, where a is the half cone angle of the flame (see Fig.…”

“…In the present work, OH-PLIF (planar laser induced fluorescence) based Bunsen flame method was attentively employed. Again, it can be used to measure the laminar burning velocity with flame front extracted from the OH images [13,30]. OH-PLIF with short exposure time (such as 50 ns) and high signal to noise ratio, is especially useful when measuring an unstable high-H 2 syngas Bunsen flame.…”

Evaluation of Reduced Kinetics in Simulation of Gasified Biomass Gas Combustion

“…The specific composition of a typical GBG fuel varies with the biomass source and processing techniques [3]. Therefore the numerical study is essential when studying GBG combustion characteristics with the possibility to provide information for "flexible" fuel composition and various operation conditions [4][5][6].…”

“…Laminar flame speed is one of the essential parameters to characterize the combustion behavior of GBG as it contains information on reactivity, diffusivity and exothermicity [1,5,6,12,[22][23][24][25]. For the kinetic simulation, laminar flame speed is a fundamental target for validating reaction dynamic models as it is always used to predict flashback, blow off, flame stability and flame propagation in practice.…”