Computational analysis of the effect of hydrogen peroxide addition on premixed laminar hydrogen/air flames

In the current work, effect of H2O2 addition on flame structure, laminar speed and NOx emissions is investigated in context 1D premixed H2/air flames at Tu = 300 600 K, p 1 30 atm, ? 0.5. Mathematical tools from computational singular perturbation approach are used order to identify key chemical transport mechanisms. The causes a significant increase (sL), heat release (Q) emissions. Indicatively, 10% (per fuel volume) atm results 72% sL, 100% Q, 140% mass fraction NO. Depending conditions structure altered through chain carrying reaction 10f (H2O2 + H ? H2O OH) or branching 9f (+M) 2OH (+M)); first favored low temperatures/pressures while latter sufficiently high temperatures/pressures. Both reactions boost radical pool generation, therefore contributing broadening zone. with largest contribution Q that mostly affected (decreased) by 21 (H O2 ? HO2 (+M)). Moreover, enhances stability flame. Finally, increased production NO mainly associated temperature reached H2O2.