Influence of Current and Interelectrode Gap on Characteristics of Longitudinal-Transverse Discharge in a Supersonic Airflow

This work is devoted to the problem of stable operation of a longitudinal-transverse discharge in a supersonic flow and its parameters. A longitudinal-transverse discharge in an air flow with parameters M = 2, V similar to 500 m/s, T-g = 170 K, P-st = 22 kPa is considered. High-speed imaging and data acquisition were used to obtain data on the variation of the discharge length, current, and voltage over time. The main purpose of the work was to investigate the dynamics of DC discharge and to describe relations between its geometrical and electrical parameters. Experiments were aimed at obtaining detailed data on the influence of interelectrode distance and discharge current on discharge length and, consequently, on voltage and power release, as well as to determine typical breakdown frequencies depending of discharge parameters. The electrode fall voltage was determined.

Automated summary

This study focuses on the stable operation and parameters of a longitudinal-transverse discharge in a supersonic flow. High-speed imaging and data acquisition were used to analyze the variation of discharge length, current, and voltage over time. The main objective was to understand the dynamics of the DC discharge and establish relationships between its geometrical and electrical parameters. The experiments aimed to gather detailed data on the influence of interelectrode distance and discharge current on discharge length, voltage, power release, and determine typical breakdown frequencies based on discharge parameters. The electrode fall voltage was also determined.