Zero-dimensional and pseudo-one-dimensional models of atmospheric-pressure plasma jets in binary and ternary mixtures of oxygen and nitrogen with helium background

Abstract A zero-dimensional (volume-averaged) and a pseudo-one-dimensional plug-flow (spatially resolved) model are developed to investigate atmospheric-pressure plasma jets operated with He, He/O 2 , He/N /O mixtures. The models coupled the Boltzmann equation under two-term approximation self-consistently calculate electron energy distribution function. An agreement is obtained between calculations spatially averaged values of simulation results. verified against resolved results validated wide variety measurement data from literature. nitric oxide (NO) concentration thoroughly characterized for variation gas mixture ratio, helium flow rate absorbed power. ‘effective’ hypothetical larger coefficient value reactive quenching N 2 ( mathvariant="normal">A 3 mathvariant="normal">Σ , mathvariant="normal">B mathvariant="normal">Π stretchy="false">) + mathvariant="normal">O mathvariant="normal">P → mathvariant="normal">D used estimate role species N (A 3 Σ, B Π; v > 0) multiple higher electronically excited states instead only = in this quenching. NO measurements at low power better almost identically captured by simulations using values, respectively. Furthermore, $\mathrm{O}({}^{3}\mathrm{P})$?> density same operation conditions also predicted adopting these values. It found that contribution vibrationally nitrogen molecules ( ⩾ 13) net formation gains more significance vibrational functions (VDFs) molecular oxygen O < 41) 58) investigated regarding their mechanisms responses parameters. observed VDF shows stronger response than VDF. sensitivity respect resolutions, wall reaction probabilities synthetic air impurity levels presented. simulated properties sensitive variation, especially feed containing nitrogen. one-dimensional experimental direction, it case an analysis inside jet chamber interest. increasing spatial direction saturated relatively high stationary along mass flow, while continuously growing until nozzle.