Fast combustion waves and chemi-ionization processes in a flame initiated by a powerful local plasma source in a closed reactor

Electrical conductivity of a methane–air burning plasma under the action of weak electric fields

“…This result gives an indication of the accuracy of the present model in simulating fuel-lean conditions, such as those considered for Ansaldo burners. Recently, the electron density in a stoichiometric methane-oxygen flame at low pressure (p=180 torr) has been measured by two-frequency microwave diagnostics [34] in conditions of ionization governed by a chemi-ionization mechanism. In the same paper, a kinetic model has been developed to describe the theoretical temporal profiles of temperature, electron density and molar fractions of chemical species.…”

“…The sensitivity of the model results to the different datasets has been discussed in detail in [33], where nanosecond atmospheric discharges, also in a post-discharge regime, were considered. It should be stressed that chemical processes are also sources of free electrons in the flame, requiring an adequate kinetic scheme for low applied fields, as discussed in a recent paper [34], where the electron density of a stoichiometric methane-oxygen flame has been theoretically estimated and compared with experimental results.…”