Non-equilibrium plasma has promising applications in combustion enhancement. In this study, 1D simulations are conducted for the forced ignition process using non-equilibrium plasma generated by repetitively pulsed nanosecond discharge (NSD). The ignition kernel is induced by a discharge area with NSD and it develops and propagates in a static stoichiometric hydrogen/air mixture. The objective is to assess how the characteristics of NSD affect the ignition delay time and ignition kernel development during the forced ignition process. Similar to the homogeneous ignition considered in part I, the forced ignition process is found to be strongly affected by the pulse number, discharge frequency, discharge radius, total input energy, and input energy per pulse of NSD. For a fixed input energy per pulse, the ignition delay time decreases and the propagation speed of the initial ignition kernel increases with the pulse number, discharge frequency and discharge radius. However, for a fixed total input energy, the ignition delay time increases and the propagation speed of the initial ignition kernel decreases with the pulse number. Furthermore, it is found that the promotion of ignition kernel development and propagation in the forced ignition by NSD are mainly due to the kinetic effect rather than the thermal effect.

非平衡等离子体在增强燃烧方面具有广阔的应用前景。在这项研究中，使用重复脉冲纳秒放电（NSD）产生的非平衡等离子体对强制点火过程进行了一维模拟。点火核由NSD放电区诱导，并在静态化学计量氢/空气混合物中发展和传播。目的是评估在强制点火过程中，NSD的特性如何影响点火延迟时间和点火核的发展。类似于第一部分中考虑的均匀点火，发现强制点火过程受NSD的脉冲数，放电频率，放电半径，总输入能量和每个脉冲的输入能量的强烈影响。对于每个脉冲固定的输入能量，随着脉冲数，放电频率和放电半径的增加，点火延迟时间减少，初始点火核的传播速度增加。但是，对于固定的总输入能量，点火延迟时间会增加，并且初始点火核的传播速度会随着脉冲数的增加而降低。此外，已经发现，通过NSD的强制点火中点火核的发展和传播的促进主要是由于动力学效应而不是热效应。