期刊
JOURNAL OF PHYSICS D-APPLIED PHYSICS
卷 52, 期 31, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1361-6463/ab208e
关键词
plasma-liquid interaction; cold atmospheric-pressure plasma; plasma jet; transport processes; reactive species; numerical modelling
The paper presents the results of a modelling study on the transport phenomena for a turbulent atmospheric-pressure plasma jet in contact with liquid. The focus is on the convective flow field in the gas and liquid phases and the transport of plasma generated long-lived hydrophilic species into the liquid. The flow field is studied by solving the Navier-Stokes equations using the finite-element method. The transport of species from the gas into the liquid phase is studied on the example of hydrogen peroxide by solving the convection-diffusion equation. Special attention is given to the implementation of the coupling boundary conditions at the gas-liquid interface. The computations are performed for the interaction of an argon jet with liquid under typical experimental conditions. The modelling results agree well with available experimental data. It is found that the three-dimensional nature of the flow in the liquid might be important in interpreting the experimental data. The model is shown to provide a reliable estimate of the hydrogen peroxide diffusion flux from the gas into the liquid phase.
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