| Citation: | LI Jingru, HUANG Yong. Numerical simulation of the effect of spark energy and phase on ignition success rate[J]. Journal of Aerospace Power, 2025, 40（3）：20230358 doi: 10.13224/j.cnki.jasp.20230358
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In order to study the effect of spark energy and phase on the ignition success rate of aeroengine combustion chamber, large eddy simulation （LES） method was used to simulate the ignition process of axial radial cyclone combustion chamber. The simulation results showed that the ignition was still random after increasing the spark energy to 10 J. Not all single pulse spark ignitions can establish a stable flame under the same combustible condition, and the influence of spark phase on ignition success rate was not improved after increasing the spark energy. The single spark energy release time of 0.2 ms was far less than the flow field pulsation period of 8.76 ms, mainly accounting for the serious influence of spark phase against the ignition result. Under the premise of the same total ignition energy, the multi-pulse ignition was carried out in the spark phase where the single pulse ignition failed. It was proved that using multiple spark pulses instead of single spark pulse ignition is an effective way to reduce the influence of randomness on ignition success rate in a flow field pulsation period.
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