ABSTRACT
The computational model used to simulate the nonequilibrium atmospheric pressure plasma jet (N-APPJ) usually comprises a coupled set of governing equations for charged and neutral species continuity, electron energy transport, and self-consistent electrostatic potential. Several numerical models have been developed through simulation groups’ efforts to understand the main plasma physics and chemistry of plasma jets. Y. Sakiyama et al. developed a one-way, coupled model of neutral gas flow and plasma dynamics to explain the ring-shaped emission pattern that has been observed experimentally in plasma bullets. Understanding the production mechanism of reactive oxygen and nitrogen species in the N-APPJ is very much in its early stages, but there have been several decades of research in plasma chemistry exploring how hot electrons interact with neutral components or interactions between neutral components to produce these reactive species. The seed electrons produced by photoionization in front of the plasma bullet play quite an important role in the propagation of plasma jets.
