The role of non-thermal electrons in flame acceleration

Murphy, Daniel C.; Sánchez–Sanz, Mario; Fernandez-Pello, Carlos

doi:10.1016/j.combustflame.2017.04.018

Cited by 9 publications

(2 citation statements)

References 43 publications

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“…When the electric field is applied, the mole fraction of H 3 O + and electron in the flame increases slightly. This is mainly due to the effect of ionic wind on the mixing of fuel and oxidant, 39 therefore, the chemi‐ionization reaction in the flame is intensified, and the rate of ion production is increased. It is consistent with the current change in the flame.…”

Section: Resultsmentioning

confidence: 99%

Study on the electrical response of small ethanol‐air diffusion flame under the uniform electric field

2020

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Ethanol is a renewable alternative fuel in many application areas. The external electric field is applied to assist the small ethanol diffusion flame in this study. The electrical response of flame under the uniform electric field is discussed. A reduced chemical mechanism of ethanol is used to establish a numerical model corresponding to the experimental system. The characteristics of current-electric field strength, equivalent resistance, distribution of charged species, velocity field, and reaction rate are studied. The results show that the electric field brings significant effects on the combustion and electrical characteristics of flame. As the electric field strength increases, the current through the circuit and the equivalent resistance of the flame show a three-stage variation. The current increases first (0-40 kV/m), then stabilizes (40-70 kV/m) and then continues to increase (70-100 kV/m) with the increase of the electric field

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Section: Resultsmentioning

confidence: 99%

Study on the electrical response of small ethanol‐air diffusion flame under the uniform electric field

2020

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“…Moreover, the external electric fields have been observed to extend the combustion stability by preventing or controlling the liftoff [6,7] or blowoff [8][9][10][11] in premixed [12] and non-premixed flame [13] flames. Three different mechanisms have been postulated in the literature to explain the effect of the electric field on flames: ionic wind, ohmic heating and kinetic enhancement by non-thermal electrons [14]. Flames are under weakly ionised plasma states since charged particles (like H 3 O + , HCO + , C 3 H + 3 and electrons, e -) are generated in the reaction zones through chemionisation and subsequent ion chemistry.…”

Section: Introductionmentioning

confidence: 99%