Open AccessВлияние импульсных скользящих поверхностных разрядов на сверхзвуковое обтекание тонкого клина в ударной трубе
Author(s) -
И.В. Мурсенкова,
А.С. Сазонов,
Ю. Ляо
Publication year - 2018
Publication title -
pisʹma v žurnal tehničeskoj fiziki
Language(s) - English
Resource type - Journals
eISSN - 1726-7471
pISSN - 0320-0116
DOI - 10.21883/pjtf.2018.04.45639.17074
Subject(s) - wedge (geometry) , shock wave , mechanics , airflow , supersonic speed , flow visualization , shock tube , materials science , glow discharge , oblique shock , flow (mathematics) , plasma , optics , physics , thermodynamics , quantum mechanics
The influence of ~300-ns pulsed sliding surface discharges on supersonic airflow with M = 1.2–1.5 past a thin wedge has been studied in a shock tube at 0.12–0.14 kg/m^3 gas density. It is established that inhomogeneity of the airflow-density field near the wedge leads to changes in the discharge current geometry and the structure of surface-discharge glow. The dynamics of discharge-initiated shock waves disturbing the quasi-stationary flow past the wedge was studied by the method of shadow visualization. It is shown that shock waves from intense surface-discharge channels in front of the wedge and behind its rear part can produce nonstationary action on the flow past the wedge surface, which lasts for up to 120 μs after the discharge pulse.