Realistic geometric modeling of the dielectric constant and its effect on the discharge with a porous dielectric

Porous dielectric discharge (PDD) is a critical phenomenon in plasma catalysis, biomedical tissue surface functionalization, and all-solid-state battery design. The constant of porous (PD) significantly impacts characteristics breakdown mechanisms across different applications. However, the complex spatial structure media presents challenges diagnosing simulating PDD, limiting our understanding its mechanism. In this study, real geometric model PD obtained from x-ray computed tomography (X-Ray-μ CT) two-dimensional fluid were used to simulate analyze effect on PDD-plasma characteristics, especially generation disappearance charged particles. simulation results reveal following: (1) At moment, PDD density-unbalanced where electron density two orders magnitude higher than ion density; (2) follows most accessible channel instead filling entire gap, which guided by temperature gradient; (3) It was first discovered that voltage exhibits saturated growth curve under control constant. By combining these mechanisms, comprehensive explanation has been provided for phenomenon. This study offers robust theoretical basis PDD.