Prediction of flashback limits for laminar premixed hydrogen-air flames using flamelet generated manifolds

Vance, F.H.; Goey, de Lph Philip; Oijen, J.A. van

doi:10.1016/j.ijhydene.2023.03.262

Cited by 7 publications

(1 citation statement)

References 51 publications

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“…Eichler and Sattelmayer [25] studied the flashback phenomenon in laminar and turbulent premixed flames in the boundary layer using both experimental and numerical approaches, confirming that the turbulent flame movement in the boundary layer is a stochastic process. Vance et al [26] numerically analyzed the effect of increasing hydrogen concentration in methane fuel and the influence of wall temperature. They considered two fixed wall temperatures of 300 K and 600 K, observing a direct relationship between the tendency for flashback and the wall temperature.…”

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Hydrogen Addition Effects on Flashback in a Combustion Chamber

Mohamadi,

Tahsini,

Tavazohi

2024

Preprint

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The purpose of this work is to investigate the effects of adding hydrogen to the fuel on the combustion induced vortex breakdown flashback phenomenon in a combustion chamber. An atmospheric research burner is selected for studies and the analysis is performed using numerical simulations. In order to model the turbulence-chemistry interactions, the EDC combustion model is utilized and the GRI 2.11 reaction mechanism is used to investigate the combustion process as carefully as possible. The present studies are performed keeping the exit temperature constant. To do this, by adding any amount of hydrogen to the premixed inlet flow, the methane is decreased by using the trial-and-error until the mass averaged exit temperature remains almost constant. The purpose of applying this limitation is to keep the cycle operational condition unchanged that is important for adding hydrogen to the existing combustion chambers especially from technological viewpoint. In addition, the thermal NOx production is controlled. In the following, the effect of hydrogen addition on the flame thickness and flame shape is investigated and finally, the effect of operating pressure on the flashback behavior is analyzed.

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confidence: 99%