SIMULATION OF GAS FLOW THROUGH A PERFORATED PIPE IN A COAXIAL DISCHARGE SYSTEM

Abstract

Purpose. To determine the impact of design parameters of a gas discharge system based on a perforated tube on the nitrogen pressure distribution between the electrodes and to model the physical and topological characteristics of this system to enhance its efficiency.

Methodology. The modeling of the gas discharge process was performed using numerical methods to calculate the pressure and gas velocity in a coaxial discharge system. The methodology is based on the Navier-Stokes equations for a single-phase nitrogen flow through a perforated tube, accounting for different flow regimes (laminar and turbulent) as well as variations in gas temperature, viscosity, and density. The Reynolds number is applied to classify the flow regimes.

Findings. Modeling indicated that the gas distribution in the discharge system depends on the tube parameters and the location of the holes in the anode. The gas flows unevenly through the holes, leading to non-uniform discharge burning along the system axis. To improve the uniformity of gas distribution, the use of more complex system designs is recommended.

Originality. For the first time, the modeling of a gas discharge system with a perforated tube was conducted using a physical-topological approach to study the influence of design parameters on gas pressure distribution. This allowed for the identification of critical factors affecting the uniformity of flow and, consequently, discharge stability.

Practical value: The obtained results can be utilized to optimize the design of gas discharge systems in industrial and scientific installations, particularly to ensure discharge stability and uniformity in coaxial systems, thereby enhancing the operational efficiency of such installations.