Electrodynamic Model of Combustion Chamber With Initiated Subcritical Streamer Discharge

Various electrodynamic models of a combustion chamber with an initiated subcritical streamer discharge used to ignite a combustible air/fuel mixture are considered. To localize the discharge in the working chamber, initiators based on half-wave electromagnetic vibrators with resonant properties are applied. The dependencies of the structure of the electric field forming the discharge on the geometric parameters of the discharge initiator are obtained, and integration of the combustion chamber with the generator of microwave radiation is discussed. Calculations are performed for various orientations of the discharge initiator with respect to the optical axis of the chamber. Possibilities for further enhancement of the electric field at the poles of the initiator of a developed streamer discharge are discussed. The results obtained confirm the possibility of using subcritical streamer discharge in high-pressure combustion chambers. The ways of increasing the resulting electromagnetic field at the vibrator poles to form discharge with a developed streamer structure are determined. The results obtained are potentially important to study ignition and combustion of air/fuel mixtures induced by the subcritical streamer discharge.