COMPUTER MODELING OF THE EFFECT OF MICROWAVE DISCHARGE STREAMER STRUCTURES ON SHOCK WAVE PROPAGATION

Author(s): Ecaakov Igor Ivanovich, Bychkov Vladimir Lvovich, Ardelyan Nikolay Vasilievich

Rubric: Mathematical cybernetics

DOI: 10.21777/2500-2112-2019-3-45-56

Release: 2019-3 (28)

Pages: 45-56

Keywords: computer modeling, shock wave, streamer, microwave discharge filaments, filament

Annotation: The presented research is devoted to computer modeling of interaction between shock waves (SW) and streamers of the high-frequency discharge in connection with the problem of sonic boom. Currently, there are a number of works relating to the use of plasma to attenuate the sonic boom. The authors of the article consider the creation of hot filaments (filaments) by different plasma sources. In the approaches associated with the use of microwave discharge, the propagation of SW through hot filaments is assumed, causing their explosion and affecting the SW itself. This work is devoted to the study of the propagation of SW through the microwave discharge strands in order to determine the parameters of filaments, at which the influence of microwave discharges on SW can be exerted. Lengths and temperatures of microwave streamers were obtained at which the interaction of microwave filaments with SW occurs: they usually corresponded to filaments with a width of 0.1-0.5 mm, a length of more than 0.5-1 cm, with an internal gas temperature of more than 2500 K. The filaments should be directed at some angle to the SW. In the course of the study, no significant effect was obtained when the cross-section of the filament is perpendicular to the direction of motion of the SW. According to experimental data, electric fields in streamers (our hot filaments) can be in the range of 25-75 kV / cm at atmospheric pressure, the authors made calculations at 25 and 40 kV / cm. The plasma created in filaments by electric discharges with an electric field value equal to the critical breakdown field of 25 kV/cm and the supercritical electric field of 40 kV/cm was considered. Electrons are initiated by a background atmospheric source of electrons 4 and 10 (cm3*s)-1 corresponding to atmospheric conditions.

Bibliography: Ecaakov IG.IV., Bychkov VL.LV., Ardelyan NI.VA. COMPUTER MODELING OF THE EFFECT OF MICROWAVE DISCHARGE STREAMER STRUCTURES ON SHOCK WAVE PROPAGATION // Education Resources and Technologies. – 2019. – № 3 (28). – С. 45-56. doi: 10.21777/2500-2112-2019-3-45-56