Fast computations in atmospheric pressure plasma jets

摘要: A framework for the computation of plasma-generated species densities in atmospheric pressure plasma jets is developed and applied to kINpen device with Ar feed. The first component of the framework is a turbulent flow model, namely the large eddy simulation (LES) model. The second component is a global model being solved at transient state; a transformation from time to space (distance from nozzle exit) is achieved by using the fluid velocity. The model is implemented with a suitably modified version of πlasma-R code which allows very fast calculations (some minutes for a set of 764 reactions and 84 species). The electron energy distribution function is calculated by Bolsig+. The assumptions frequently used for global models are evaluated in order to examine the extent of their limits. Atomic oxygen measurements are used for the evaluation of the results. LES model is necessary for high accuracy. Simple …