In this study, a two-dimensional simulation of atmospheric-pressure streamer discharge with a dielectric on the cathode was conducted to investigate the effects of relative permittivity on primary and secondary streamer characteristics. An electrode configuration with an air gap of 0.1 mm was employed. The input parameters of the simulations were the relative permittivity, dielectric thickness, and applied voltage, which were summarised with five simulation conditions. The propagation velocity and electric field strength of the primary streamer mostly depended on the initial electric field applied between the anode and the dielectric surface, which is determined by the relative permittivity, dielectric thickness, and applied voltage. Conversely, the length and electric field strength of the secondary streamer depended on the amount of charge supplied by the primary streamer and the capacitance of the dielectric, which is defined by the relative permittivity and dielectric thickness.

在这项研究中，对阴极上有电介质的大气压流注放电进行二维模拟，以研究相对介电常数对一次和二次流注特性的影响。采用了气隙为 0.1 mm 的电极配置。模拟的输入参数是相对介电常数、电介质厚度和外加电压，概括为五个模拟条件。主流的传播速度和电场强度主要取决于施加在阳极和电介质表面之间的初始电场，该电场由相对介电常数、电介质厚度和施加的电压决定。反过来，