摘要: This work presents a computational model of a ID laminar premixed flame acted on by a nanosecond repetitively pulsed dielectric barrier discharge (NRP DBD). The model allows for incorporation of arbitrarily complex combustion and ... 展开 This work presents a computational model of a ID laminar premixed flame acted on by a nanosecond repetitively pulsed dielectric barrier discharge (NRP DBD). The model allows for incorporation of arbitrarily complex combustion and discharge chemical kinetic models and builds on existing open source tools for OD simulations. Laminar flame speed is used as a metric of performance due to the ease of measuring it, both in experiments and simulation, and as a fundamental parameter that captures information of the burning rate in a combustor and can inform more complex combustion phenomena (including turbulent combustion, exhaust emissions, or combustion efficiency). The model is able to handle both in-situ plasma deposition (overlapping plasma with the reaction front), as well as plasma deposition on the reactant stream (plasma ahead of the reaction front). It is shown in simulation that the discharge can have both a negative and a positive effect on the flame speed relative to the fresh gas. The former is due to disruptions at the reaction front caused by small amplitude pressure waves caused by exothermic reactions in the unburnt mixture; and the latter results in flame speed enhancement by radicals seeded by the discharge. Both the positive and the negative effects of the discharge have been observed in experiments, and further work is underway to confirm the mechanisms of action. The model allows many different parameters to be varied and going forward will be used as an engineering tool to design experiments to achieve the maximum benefit from the discharge. 收起