Atomic Oxygen Generation by Longitudinal–Transverse Discharge

Results of numerical simulation using Plasmaero CFD code are presented for direct current (DC) discharge in a high-speed airflow. Modelling of plasma was performed using single-fluid MHD approach and detailed plasma-chemistry. As a result of simulation, the dynamics of DC discharge was obtained which corresponds to dynamics of this object registered during previous experimental study including such effect as the discharge re-breakdown. Concentration of atomic oxygen in different parts of discharge and near them was obtained and analysed. The influence estimation of obtained atomic oxygen concentration on the fuel mixture induction time was performed using zero-dimensional calculation. It was shown that atomic oxygen generation by DC discharge dramatically reduce the ignition delay that could be important for combustion stimulation in a high-speed flow.