Characterization of subsonic air plasma jets in the VGU-3 high-frequency induction plasmatron




The distributions of dynamic pressures and heat fluxes in subsonic jets of the VGU-3 high-frequency plasmatron flowing from a conical water-cooled nozzle with an outlet diameter of 80 mm were obtained experimentally. Dynamic pressures were measured using a Pitot-Prandtl tube. Heat fluxes were measured using a water-cooled calorimetric probe with a copper heat-absorbing surface. A thermal imager was used to obtain temperature distributions on the outer surface of the quartz discharge channel of the plasmatron with and without the nozzle installed. All experiments were conducted at anode power supplies of 100 and 250 kW for pressures in the plasmatron test chamber of 5 and 10 kPa.

HF plasmatron, dissociated air, plasma diagnostics, induction plasma


Volume 26, issue 7, 2025 year


Диагностика дозвуковых струй воздушной плазмы в высокочастотном индукционном плазмотроне ВГУ-3

Экспериментально получены распределения динамических давлений и тепловых потоков в дозвуковых струях ВЧ-плазмотрона ВГУ-3, истекающих из конического водоохлаждаемого сопла с диаметром выходного сечения 80 мм. Динамические давления измерены трубкой Пито-Прандтля. Тепловые потоки измерены водоохлаждаемым калориметрическим зондом с медной тепловоспринимающей поверхностью. С помощью тепловизора получены распределения температур на внешней поверхности кварцевого разрядного канала плазмотрона при использовании сопла и без установленного сопла. Все эксперименты проведены при мощностях анодного питания 100 и 250 кВт для давлений в испытательной камере плазмотрона 5 и 10 кПа.

ВЧ-плазмотрон, диссоциированный воздух, диагностика плазмы, индукционная плазма


Volume 26, issue 7, 2025 year



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