Laminar premixed flame characteristics of hydrogen blended iso-octane–air–nitrogen mixtures

Effect of iso-octane/methane blend on laminar burning velocity and flame instability

“…Ma et al [21] also investigated on the laminar burning characteristics of MF(2-methylfuran)-iso-octane blend. Hydrogen was also added to iso-octane to propose a model by Tahtouh et al [22]. The influences of pressure, equivalence ratio and ethanol mole fraction on iso-octane/air flame velocity was investigated by Varea et al [23].…”

Kinetic and dynamic analysis of hydrogen-enrichment mixtures in combustor systems – A review paper

“…These phenomena are induced by a chemical mechanism as explained by Westbrook et al [111]. The studies report that a higher hydrogen mole fraction is not only causing stretched flame propagation speeds and an increase in the burning velocity, but also reducing the burned gas Markstein lengths (L b ) [5,10,43,50,51,54,67], which in turn results inane increase in the instability of the flame [5,10,37,39,51,54,67]. As can be seen, this is more significant for propane-hydrogen mixtures due to the higher inhibiting reaction, H þO 2 þ M-HO 2 þM, and a delaying effect is, therefore, inflicted on the overall progress of the reaction with increasing pressure [43,46].…”

“…On the other hand, investigations also show that adding N 2 to both methane-hydrogen and iso-octane-hydrogen mixtures [10,54], as well as adding CO to methane-hydrogen [5,63] and propane-hydrogen mixtures [5], significantly reduced the rate of the laminar burning velocity for every hydrogen mole fraction due to the enhancement of the flame inheritor groups (Fig. 1b and c); increase in H 2 fractions, the carbon fraction declined in the methane-hydrogen blends and the combustion temperature increased as discussed in Section 3.…”

“…The fundamental and practical aspects of the usage of hydrogen-hydrocarbon mixtures on both transportation and power generation (in terms of their mechanical and chemical properties) in different systems, such as engines [11][12][13][14][15][16][17][18][19][20][21][22][23][24], burners [25][26][27][28][29][30][31][32][33][34], combustion bombs [35][36][37][38][39][40][41], vessels [8,9,[42][43][44][45][46] and chambers [5,10,[47][48][49][50][51][52][53][54], have been broadly investigated. The parameters affecting hydrogen-hydrocarbon mixtures have been studied, including flame configurations, e.g., laminar premixed …”

“…As far as authors' concern, literature studies have focused on the effect of the addition of hydrogen to: (a) dynamics and chemical characteristics (kinetics [50,63,64], flame stability [37,39,49,51,[65][66][67], NOx [2,16,18,36,38,49,57,58,65,[68][69][70][71][72][73][74], CO [16,27,28,31,38,65,73] and CO 2 emissions [16,18,31,33,36,75], Markstein length [5,7,10,36,37,39,43,50,54,56,67,[76]…”