This work describes a method for using the power parameters of the Lennard-Jones central potential to simulate phenomena in the technology of material processing by a vapor-gas discharge plasma with a liquid electrode.

A method for calculating the power parameters of a potential of the Lennard-Jones type for a number of individual gases, which can be products released during the ignition and combustion of a gas-vapor discharge with a liquid electrode, is presented. The information obtained makes it possible to calculate the viscosity and diffusion coefficients of individual gases and gas mixtures, which will make it possible to solve a range of problems when modeling processes in the processing technology of various materials (substances) by vapor-gas discharge plasma with a liquid electrode.

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The processes that occur at the solid electrode-electrolyte interface and in the discharge gap during surface treatment with a vapor-gas discharge are a set of various interrelated phenomena, such as physical, chemical and electrochemical ones. The main physicochemical phenomena that determine the process of processing metal surfaces are the electric field, modes of heat and mass transfer between the processed metal surface and the liquid medium (electrolyte). Due to the large number of physical parameters that significantly affect the processing of a part, difficulties arise in planning and conducting experiments in order to optimize the technology for processing metal surfaces. This problem can be solved using mathematical modeling, which allows you to explore various processes and phenomena at no additional cost. The proposed mathematical model will be useful both at the stage of processing the measurement results and in preparing for the experiment.

The paper shows some results of the definite current-voltage characteristic (CVC) of interaction of electric discharge with a jet electrolytic cathode and a steady anode at different jet lengths (lc), jet diameter (dc), electrolyte flow rate (G) for various electrolyte concentrations.