Numerical Simulation of Plasma Igniter Efflux Characteristics Based on Multi-Physical Field Coupling

Abstract To explore the chamber plasma jet ignition effect, the establishment of pre-chamber plasma jet ignition based on a 3D model using the method of numerical simulation was carried out on the working process of the plasma ignition numerical calculation. The analysis of firearms in the combustion chamber ignition characteristics provided a reference for the ignition performance boost. The results show that the jet velocity at the igniter outlet can reach 78 m/s and the jet temperature can reach 2300 K, which makes the hot jet spread far enough in the reflux area and ensures that the jet can achieve the effect of heating and igniting in a larger area. The mixture in the air reacts with the kerosene position along the border, ignition in the igniter fine channel before export, igniter speeding up the export position of flow velocity, the jet core region of the temperature of 2400 K, the igniter export position of kerosene component concentration was 45%, the concentration of O 2 was 20%, the H 2 O concentration was 15%, and the CO 2 concentration was 7%. The ratio of air to kerosene should be such that the two flow at similar speeds in the mixing area.