FLOW IN THE NOZZLE OF AN ALTERNATING-CURRENT PLASMA GENERATOR WITH A NONSTATIONARY LOCAL ENERGY SUPPLY

A numerical simulation of gas fl ows in the nozzle of an alternating-current plasma generator with a nonstationary local energy supply has been performed. The nonstationary gas fl ows in the plasma-generator nozzle with a highpower energy supply were simulated using the fi nite-volume method and the vectorized approach to the calculation of fl ows. Results of numerical simulation of the one-dimensional and two-dimensional gas fl ows in the nozzle of an alternating-current plasma generator with a moving energy-supply zone are presented. On the basis of the numericalsimulation data obtained, a quantitative analysis of the gasdynamic and thermal processes occurring in the nozzle of such a generator with a nonstationary energy supply to the gas fl ow in it has been performed. The dependence of the rate of an overexpanded gas fl ow in the plasma-generator nozzle and the shift of a compression shock in it on the power and cyclicity of the energy supply to the subsonic section of the nozzle was determined.
   
Author:  N. A. Brykov, K. N. Volkov, V. N. Emel′yanov, and I. V. Teterina
Keywords:  plasma generator, energy supply, gas-fl ow rate, compression shock, computational fl ow dynamics
Page:  640