2022 年 64 巻 209 号 p. 288-294
The effect of the frequency of discharges on the ignition delay time was investigated using a zero-dimensional reaction analysis. Assuming that the active species are produced instantaneously by nanosecond pulsed repetitive discharges, the reaction pathways for the consumption of O atoms produced by the discharges at different frequency of discharges are compared. Results showed that the time required for the ignition became shortest at a frequency of 20 kHz. The decrease in the reaction rate of between CH2O and O atoms can be responsible for the increase in the time required for ignition in the high frequency of discharges. The CH2O concentration during the multiple discharges was determined by the competition between the interval of the discharges and the time scale of the reactions related CH3O.
