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Communication Dans Un Congrès Année : 2023

Effect of fuel properties on the stabilization of a monodisperse spray flame

Effet des propriétés du combustible sur la stabilisation d'une flamme de pulvérisation monodispersée

Résumé

New fuels are being produced to replace conventional kerosene to meet the challenges of diminishing fuel resources and environmental issues [1]. However, these new fuels must meet the same standards as conventional kerosene, especially flame stability [2]. However, to optimize the use of these fuels, the choice of the injection system is critical because it will drive the spray characteristics, which will directly impact the flame dynamics. However, decoupling the injection system from flame dynamics in current combustion systems is challenging [3]. In this context, we have designed a burner with an injector capable of generating a spray independent of the fuel properties. The injector is the MTG-01-G3 injector from FMP technology which generates monodisperse droplets spray from a piezo actuator. The injector can generate droplets with diameters in the range of 45µm to 65µm that we control with great precision based on fuel flow rate and piezo frequency. The burner is swirled and turbulent with a mixing zone to properly mix the fuel and the air. The flame is stabilized at the exit of this mixing zone, where it burns in a quartz tube, allowing us to have optical access to the flame. Our study uses conventional and alternative kerosene surrogates with relatively high evaporation temperatures, making them tough to burn at ambient temperature. Thus, to stabilize the flame, we also inject methane which stands for less than half of the global equivalence ratio of the flame. Finally, thanks to this configuration, we have analyzed the effect of physical properties on the spray flame stabilization.
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Dates et versions

hal-04036624 , version 1 (19-03-2023)

Identifiants

  • HAL Id : hal-04036624 , version 1

Citer

G Parant, Laurent Zimmer, F Richecoeur. Effect of fuel properties on the stabilization of a monodisperse spray flame. 11th European Combustion Meeting (ECM 2023), Apr 2023, Rouen, France. ⟨hal-04036624⟩
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